3. A girl of height 90cm is walking away from the bas of a lamp-
postat a speed of 1.2m/s. If the lamp is 3.6m above the
ground, find the length of her shadow after 4 seconds.
speed of the girl = 120 cm/s
4s ಗಳĹÐನœೆದ ದೂರ = 120x4 = 480cm
Height of lamp = AB = 360cm
Height of girl = DE = 90cm
Distance walked by the girl = BE = 480cm
In ∆ABC and ∆DEC,
∠ABC = ∠DEC = 900
∠C = ∠C [∵common angle]
∴ ∆ ABC ~ ∆ DEC [ ∵by AAA Criterion]
∴
୉େ
୆େ
=
ୈ୉
୅୆

∴
୉େ
୆୉ା୉େ
=
ୈ୉
୅୆

∴ EC =
ୈ୉[୆୉ା୉େ]
୅୆

∴ EC =
ଽ଴[ସ଼଴ା୉େ]
ଷ଺଴

∴ EC =
[ସ଼଴ା୉େ]
ସ

∴ 4EC = 480 + EC
∴ 3EC = 480
∴ EC = 160cm
∴length of shadow = EC = 1.6m
On 01-Oct-2016 8:33 am, "Rajesh SM" <[email protected]> wrote:

> On 1 Oct 2016 7:20 a.m., "Harikiran K" <[email protected]> wrote:
>
>> Plz add  9449838325 to Mathematical society
>>
>> On 29-Sep-2016 6:31 PM, "Thara S.S.Murthy" <[email protected]> wrote:
>>
>>> I am Thara S.S. please add 9945596203
>>>
>>>
>>> 2016-09-28 23:23 GMT-07:00 bharathi h.n <[email protected]>:
>>>
>>>> Please add my no. 9900368504
>>>> Bharathi H N
>>>> Asst Teacher
>>>> G H School
>>>> Galibeedu
>>>> Madikeri Tq.
>>>> Kodagu Dist. 571201
>>>> On Jul 27, 2016 7:36 AM, "9964644418" <[email protected]> wrote:
>>>>
>>>>> Add me 9964644418 e-mail [email protected]
>>>>>
>>>>> Rudresh Manuvacharya <[email protected]> wrote:
>>>>>
>>>>> Add this no 8970415838
>>>>> On 26 Jul 2016 21:02, "Nagaraj MK" <[email protected]> wrote:
>>>>> >
>>>>> > 9448268520 add to the group
>>>>> >
>>>>> >
>>>>> > On Tue, Jul 26, 2016 at 8:27 PM, nagaraj itagi <
>>>>> [email protected]> wrote:
>>>>> >>
>>>>> >> This message is eligible for Automatic Cleanup! (
>>>>> [email protected]) Add cleanup rule | More info
>>>>> >>
>>>>> >> 9686004701add to group
>>>>> >>
>>>>> >> Nagaraj H Itagi. SMHS. Balambeed. Tq-Hangal.Dt-Haveri.
>>>>>
>>>>> >>
>>>>> >> On Jul 23, 2016 10:37 PM, "Gireesha HP" <
>>>>> [email protected]> wrote:
>>>>> >>>
>>>>> >>> ಆತ್ಮೀಯರೇ .....
>>>>> >>>
>>>>> >>> ಗಣಿತ ವಿಷಯಕ್ಕೆ ಸಂಬಂಧಿಸಿದ ಹಾಗೆ ತಾಲೂಕಿಗೆ ಒಬ್ಬರು ಅಥವಾ ಇಬ್ಬರು
>>>>> ಪ್ರತಿನಿಧಿಯಂತೆ (ಅವಶ್ಯಕತೆಗೆ ಅನುಗುಣವಾಗಿ) ಕರ್ನಾಟಕ ಮ್ಯಾಥಮೆಟಿಕಲ್ ಸೊಸೈಟಿ ತೆರೆಯಲು
>>>>> ಉದ್ದೇಶಿಸಿದ್ದು ಇದರ ಉದ್ದೇಶಗಳು ಕೆಳಕಂಡಂತೆ ಇದೆ....
>>>>> >>> 1) ಗಣಿತ ವಿಷಯ ಸಂಬಂಧಿ ಮಾಹಿತಿಗಳನ್ನು ತಿಳಿಸಲು
>>>>> >>> 2) ಪ್ರತೀ ತಾಲೂಕಿಗೂ , ಆ ತಾಲೂಕಿನ ಶಿಕ್ಷಕರ ಸಂಪರ್ಕವನ್ನು ಈ ಪ್ರತಿನಿಧಿಗಳ
>>>>> ಸಹಾಯದಿಂದ ತಲುಪಲು
>>>>> >>> 3) ಅನಂತದೆಡೆಗೆ ಗಣಿತ ಪತ್ರಿಕೆ ಯಂತಹ ಪತ್ರಿಕೆಗಳ ಪ್ರಯೋಜನ ಪಡೆಯುವಂತಾಗಲು
>>>>> >>> 4) ಗಣಿತ ಶಿಕ್ಷಕ ಮಿತ್ರರು ಬರೆದ ಗಣಿತ ಪುಸ್ತಕಗಳನ್ನು ,ಗಣಿತ ಸಾಹಿತ್ಯಗಳನ್ನು
>>>>> >>> ಪರಿಚಯಿಸಲು
>>>>> >>> 5) ಗಣಿತ ಸಮಾವೇಶ ಮಾಡಲು ನಿಮ್ಮ ಭಾಗವಹಿಸುವಿಕೆಗಾಗಿ ,ಚರ್ಚೆಗಾಗಿ....
>>>>> >>>
>>>>> >>>             ಇವೇ ಮೊದಲಾದ ಗಣಿತ ಸಂಬಂಧೀ ಕೆಲಸಗಳಿಗಾಗಿ ರಾಜ್ಯದ ಪ್ರತೀ
>>>>> ತಾಲೂಕಿಗೆ ಒಬ್ಬರು ಪ್ರತಿನಿಧಿಯಂತೆ ಮಾತ್ರ  "ಕರ್ನಾಟಕ ಮ್ಯಾಥಮೆಟಿಕಲ್ ಸೊಸೈಟಿ " ವೇದಿಕೆ
>>>>> ಸೃಷ್ಟಿಯಾಗುತ್ತಿದೆ.
>>>>> >>>
>>>>> >>> ಆಸಕ್ತರು ಹಾಗೂ ಆಯಾ ತಾಲೂಕುಗಳಲ್ಲಿ ಸಂಪನ್ಮೂಲ ವ್ಯಕ್ತಿಗಳಾಗಿ ಕೆಲಸ ಮಾಡುವವರು
>>>>> ದಯಮಾಡಿ ಇದನ್ನು ಗುಣಾತ್ಮಕವಾಗಿ ನಿರ್ಮಿಸಲು ಸಹಕರಿಸಲು ಕೋರಿದೆ.....
>>>>> >>>
>>>>> >>> ಆಸಕ್ತರು ಅಥವಾ ನಿಮಗೆ ತಿಳಿದಿರುವ ನಿಮ್ಮ ತಾಲೂಕಿನ ಆಸಕ್ತ ಗಣಿತ ಶಿಕ್ಷಕರ
>>>>> ಹೆಸರನ್ನು  ಆಯಾ  ತಾಲೂಕನ್ನು ಪ್ರತಿನಿಧಿಸಲು .......
>>>>> >>>
>>>>> >>> ಗಿರೀಶ್.ಹೆಚ್.ಪಿ ಇವರ
>>>>> >>> Whats app ಅಥವಾ ಹೈಕ್ ಸಂಖ್ಯೆ
>>>>> >>>  9902244195
>>>>> >>> ಅಥವಾ
>>>>> >>>  ಶ್ರೀನಿವಾಸ್  ಶೆಟ್ಟಿ ಇವರ  Whats app ಅಥವಾ ಹೈಕ್ ಸಂಖ್ಯೆ 8951261033
>>>>> ಗೆ .....
>>>>> >>>
>>>>> >>> ಹೆಸರು ,ಶಾಲೆಯ ವಿಳಾಸ, ತಾಲೂಕು, ಜಿಲ್ಲೆಯೊಂದಿಗೆ ಸಂದೇಶ ರವಾನಿಸಲು ಕೋರಿದೆ...
>>>>> >>>
>>>>> >>> ವಂದನೆಗಳೊಂದಿಗೆ. ...
>>>>> >>>
>>>>> >>> ಕರ್ನಾಟಕ ಮ್ಯಾಥಮ್ಯಾಟಿಕಲ್ ಸೊಸೈಟಿ /ಕರ್ನಾಟಕ ರಾಜ್ಯ ಗಣಿತ ಫೋರಂ
>>>>> >>>
>>>>> >>> ಹಾಸನ್ ಜಿಲ್ಲೆ ಪ್ರತಿನಿಧಿಗಳು ಮುಗಿದಿದೆ.
>>>>> >>>
>>>>> >>> --
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>>>>> in/KOER/en/index.php
>>>>> >>> 4. For Ubuntu 14.04 installation, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha
>>>>> >>> 4. For doubts on Ubuntu, public software, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>>> y_Asked_Questions
>>>>> >>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
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>>>>> >>
>>>>> >> --
>>>>> >> 1. If a teacher wants to join STF, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_
>>>>> STF_groups_member
>>>>> >> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php
>>>>> >> 4. For Ubuntu 14.04 installation, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha
>>>>> >> 4. For doubts on Ubuntu, public software, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>>> y_Asked_Questions
>>>>> >> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
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>>>>> .
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>>>>> >>
>>>>> >
>>>>> > --
>>>>> > 1. If a teacher wants to join STF, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_
>>>>> STF_groups_member
>>>>> > 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php
>>>>> > 4. For Ubuntu 14.04 installation, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha
>>>>> > 4. For doubts on Ubuntu, public software, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>>> y_Asked_Questions
>>>>> > 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
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>>>>> > For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>> --
>>>>> 1. If a teacher wants to join STF, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_
>>>>> STF_groups_member
>>>>> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php
>>>>> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php/Kalpavriksha
>>>>> 4. For doubts on Ubuntu, public software, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>>> y_Asked_Questions
>>>>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
>>>>> ---
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>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>> --
>>>>> 1. If a teacher wants to join STF, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_
>>>>> STF_groups_member
>>>>> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php
>>>>> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
>>>>> in/KOER/en/index.php/Kalpavriksha
>>>>> 4. For doubts on Ubuntu, public software, visit
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>>> y_Asked_Questions
>>>>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
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>>>>> Visit this group at https://groups.google.com/group/mathssciencestf.
>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>> --
>>>> 1. If a teacher wants to join STF, visit http://karnatakaeducation.org.
>>>> in/KOER/en/index.php/Become_a_STF_groups_member
>>>> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>>> in/KOER/en/index.php
>>>> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
>>>> in/KOER/en/index.php/Kalpavriksha
>>>> 4. For doubts on Ubuntu, public software, visit
>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>>> y_Asked_Questions
>>>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
>>>> ---
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>>>> an email to [email protected].
>>>> To post to this group, send email to [email protected].
>>>> Visit this group at https://groups.google.com/group/mathssciencestf.
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>> --
>>> 1. If a teacher wants to join STF, visit http://karnatakaeducation.org.
>>> in/KOER/en/index.php/Become_a_STF_groups_member
>>> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>>> in/KOER/en/index.php
>>> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
>>> in/KOER/en/index.php/Kalpavriksha
>>> 4. For doubts on Ubuntu, public software, visit
>>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>>> y_Asked_Questions
>>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "Maths & Science STF" group.
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>>> an email to [email protected].
>>> To post to this group, send email to [email protected].
>>> Visit this group at https://groups.google.com/group/mathssciencestf.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>> --
>> 1. If a teacher wants to join STF, visit http://karnatakaeducation.org.
>> in/KOER/en/index.php/Become_a_STF_groups_member
>> 2. For STF training, visit KOER - http://karnatakaeducation.org.
>> in/KOER/en/index.php
>> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
>> in/KOER/en/index.php/Kalpavriksha
>> 4. For doubts on Ubuntu, public software, visit
>> http://karnatakaeducation.org.in/KOER/en/index.php/Frequentl
>> y_Asked_Questions
>> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
>> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
>> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "Maths & Science STF" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected].
>> To post to this group, send email to [email protected].
>> Visit this group at https://groups.google.com/group/mathssciencestf.
>> For more options, visit https://groups.google.com/d/optout.
>>
> --
> 1. If a teacher wants to join STF, visit http://karnatakaeducation.org.
> in/KOER/en/index.php/Become_a_STF_groups_member
> 2. For STF training, visit KOER - http://karnatakaeducation.org.
> in/KOER/en/index.php
> 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.
> in/KOER/en/index.php/Kalpavriksha
> 4. For doubts on Ubuntu, public software, visit
> http://karnatakaeducation.org.in/KOER/en/index.php/
> Frequently_Asked_Questions
> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see
> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software
> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ
> ---
> You received this message because you are subscribed to the Google Groups
> "Maths & Science STF" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [email protected].
> To post to this group, send email to [email protected].
> Visit this group at https://groups.google.com/group/mathssciencestf.
> For more options, visit https://groups.google.com/d/optout.
>

-- 
1. If a teacher wants to join STF, visit 
http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_STF_groups_member
2. For STF training, visit KOER - 
http://karnatakaeducation.org.in/KOER/en/index.php
4. For Ubuntu 14.04 installation,    visit 
http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha 
4. For doubts on Ubuntu, public software, visit 
http://karnatakaeducation.org.in/KOER/en/index.php/Frequently_Asked_Questions
5. Are you using pirated software? Use Sarvajanika Tantramsha, see 
http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software 
ಸಾರ್ವಜನಿಕ  ಇಲಾಖೆಗೆ  ಸಾರ್ವಜನಿಕ  ತಂತ್ರಾಂಶ
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