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Math year 10 3d trig question (1 Viewer)

4unitmath

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Can someone do this question?
A is the top and B is the base of a tower 15m high. From C, a point due south of B, the angle of elevation of A is 15° whilst from D, bearing 060° from B, the angle of elevation of A is 21°. Find the distance of CD correct to the nearest cm.
 

RivalryofTroll

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I'm not too sure if my answer is correct but here's my attempt at it!
Re-check my calculations in your calculator to make sure that I didn't plug in the wrong values into my calculator!

Final Answer: 83 metres to the nearest metre... May be (probably is) incorrect though..

See attachment for working out...
 

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RealiseNothing

what is that?It is Cowpea
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I'm not too sure if my answer is correct but here's my attempt at it!
Re-check my calculations in your calculator to make sure that I didn't plug in the wrong values into my calculator!

Final Answer: 83 metres to the nearest metre... May be (probably is) incorrect though..

See attachment for working out...
I got this too. Except it's to the nearest cm not m, so 82.75cm.
 

jadenmaccas

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Can someone do this question?
A is the top and B is the base of a tower 15m high. From C, a point due south of B, the angle of elevation of A is 15° whilst from D, bearing 060° from B, the angle of elevation of A is 21°. Find the distance of CD correct to the nearest cm.
what makes this a 3D trig question?
 

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