If the point is on the unit circle

MATHEMATICS · Single correct · AP · AP Precalculus · Trigonometric and Polar Functions · Trigonometric and Polar Functions

Problem

If the point

P\left(\dfrac{12}{13},\,\dfrac{5}{13}\right)

is on the unit circle, what is

\sec x

, where

x

is the corresponding angle? (a)

\dfrac{12}{13}

(b)

\dfrac{13}{5}

(c)

\dfrac{13}{12}

(d)

\dfrac{12}{5}