The distance between the end of a lamppost's shadow and the top of the lamppost is 39 feet. The angle measure of the shadow is 23°.

How long is the shadow of the lamppost, rounded to the nearest tenth of a foot? Type the numeric answer only in the box below.

Numerical Answers Expected!

Question

The distance between the end of a lamppost's shadow and the top of the lamppost is 39 feet. The angle measure of the shadow is 23°.

How long is the shadow of the lamppost, rounded to the nearest tenth of a foot? Type the numeric answer only in the box below.
 
Numerical Answers Expected!

anonymous · Answer

I had 36 but it wasn't correct.

rajee_sam · Answer

Use Cos 23° = x/39 and find x

ddcamp · Answer

Cos(x°) = Length of adjacent side / length of hypotenuse

anonymous · Answer

I thought that is what I did, I used my scientific calculator

rajee_sam · Answer

35.89 maybe it asked you to round it to nearest 10th or 100th or something I don't know I got 36 too

anonymous · Answer

Ok i see what my problem was I mis read it.  I rounded it to 36.    It should be 35.9 because it is rounded to the neearest 10th.  Thanks.