Question

If p(x,y) is the point on the unit circle defined by real number theta, then cot theta= _____

A. 1/y
B. 1/x
C. x/y
D. y/x

Answer 1

Cot is the inverse of tan, so first let's find tangent. Do you know how to find tangent given p(x,y)?

Answer 2

I think so. Wouldn't the tangent of p(x,y) = y/x?

Answer 3

So as an inverse, the answer would be C?

Answer 4

Yep. Thanks!

Answer 5

Correct