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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?
 one year ago
 one year 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?
 one year ago
 one year ago

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

agdgdgdgwngoBest ResponseYou've already chosen the best response.0
Do you have a picture/drawing of the man and the tower? :D
 one year ago

agdgdgdgwngoBest 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
 one year ago

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

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

agdgdgdgwngoBest 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:\[\text{Angle in radians} \times \frac{180}{\pi}\]
 one year ago

siddhantsharanBest ResponseYou've already chosen the best response.0
You need to use the value of tan40. No other way. tan40 = 0.83
 one year ago

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

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

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

agdgdgdgwngoBest 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.
 one year ago

shubhamsrgBest 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
 one year ago
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