In a , if and , then the angle is equal…

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

In a

\triangle PQR

, if

3\sin P+4\cos Q=6

and

4\sin Q+3\cos P=1

, then the angle

R

is equal to (1)

\frac{5\pi}{6}

(2)

\frac{\pi}{6}

(3)

\frac{\pi}{4}

(4)

\frac{3\pi}{4}