Identify the angle whose point on the unit circle has a positive –coordinate and a…

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

Problem

Identify the angle whose point on the unit circle has a positive

y

–coordinate and a negative

x

–coordinate. (a)

315^{\circ}

(b)

135^{\circ}

(c)

45^{\circ}

(d)

225^{\circ}