Question

If P(x,y) is the point on the unit circle defined by real number 0 then cote=

A) 1/y

B)y/x

C)x/y

D)1/x

Answer 1

C) x/y

Explanation:

In the figure attached, the unit circle and the point P(x, y) are shown.

From definition:

cot(θ) = adjacent/opposite

From the picture, the adjacent side to θ is x and the opposite side is y. Replacing into the equation:

cot(θ) = x/y