An 18-foot pole is leaning against a wall. It touches the wall 16 feet above the ground. Find the measure of the angle that the pole makes with the ground. Round your answer to the nearest degree.

Question

anonymous · Answer

$$180-90-cos^{-1}(\frac{16}{18})$$

As there's 180 degrees in a triangle, and the wall is probably at a right angle to the ground.

anonymous · Answer

Actually, you can just do:
$$sin^{-1}(\frac{16}{18})$$
Sorry, haven't done trig in a while..

anonymous · Answer

sinθ = 16/18 = 8/9
 θ = arcsin(8/9) = 62.73°
 θ = 63°

anonymous · Answer

$$\sin^{-1}(\frac{8}{9})$$ what stroodle said

anonymous · Answer

also what mathematicalpro said
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