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 2 years ago
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
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?

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

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

agdgdgdgwngo
 2 years ago
Best ResponseYou've already chosen the best response.0You 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

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

Yahoo!
 2 years ago
Best ResponseYou've already chosen the best response.1or i dont know wat is tan 40

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

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

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

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

Yahoo!
 2 years ago
Best ResponseYou've already chosen the best response.1@siddhantsharan @agdgdgdgwngo

agdgdgdgwngo
 2 years ago
Best ResponseYou've already chosen the best response.0Well, 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.

shubhamsrg
 2 years ago
Best ResponseYou've already chosen the best response.0you 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
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