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A man wishes to estimate the distance of a near by tower first he measure the tower from a and next from b if basis is 100m and the angle is 40 find the distance between the man and the tower?
 2 years ago
 2 years ago
Yahoo! Group Title
A man wishes to estimate the distance of a near by tower first he measure the tower from a and next from b if basis is 100m and the angle is 40 find the distance between the man and the tower?
 2 years ago
 2 years ago

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Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
By using parallax method!
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.0
Do you have a picture/drawing of the man and the tower? :D
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
dw:1340283794599:dw
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
dw:1340283873172:dw
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
We have to find AC
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
@agdgdgdgwngo help
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.0
You can find the length of segment AC using trigonometric functions, since we are given the length of AB and the measure of angle ACB. Since \[\tan(40)=\frac{AB}{AC}\] Solving for AC yields \[AC = \frac{AB}{\tan(40)} = \frac{100}{\tan(40)}\] Work that out using a calcuator: http://www.wolframalpha.com/input/?i=100%2Ftan%2840%29
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
thats where i was stuck we need to convert angle into radian
 2 years ago

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or i dont know wat is tan 40
 2 years ago

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@satellite73
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.0
To convert from degrees to radians (and viceversa) Degrees to radians:\[\text{Angle in degrees} \times \frac{\pi}{180}\] Radians to degrees:\[\text{Angle in radians} \times \frac{180}{\pi}\]
 2 years ago

siddhantsharan Group TitleBest ResponseYou've already chosen the best response.0
You need to use the value of tan40. No other way. tan40 = 0.83
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.0
Right; you obtain the value of tan 40 from a table (or better  a scientific calculator).
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
hey during exam wat will i do calculators are not aloowed
 2 years ago

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@siddhantsharan @agdgdgdgwngo
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.0
Well, if the angle is not something like 0,30,45,60,90,120,135,150,180, and you are prohibited from using calculators, then most likely a table of sines/cosines/tangents will be provided.
 2 years ago

shubhamsrg Group TitleBest ResponseYou've already chosen the best response.0
you may use tan120 = tan3(40) and expand it forms a cubic eqn hmm..you can try to solve it but wont be that easy.. you may better make assumtion,,or use calculator,,why not leave answer in tan form ? note tan 45 = 1 and tan 30 = 1/sqrt3 = 0.6 approx so tan 40 should be something in between ,,maybe 0.8 and 0.9..hmm
 2 years ago
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