A point lies on the unit circle with –coordinate and is in Quadrant II

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

Problem

A point

P

lies on the unit circle with

x

–coordinate

-\dfrac{3}{5}

and is in Quadrant II. Which of the following equals

\sin \theta

for the angle

\theta

represented by

P

? (a)

-\dfrac{3}{5}

(b)

-\dfrac{4}{5}

(c)

\dfrac{4}{5}

(d)

\dfrac{16}{25}