AM-2483

R-formula

A Math · Secondary 4 · Hard · R-formula

Solve the equation

3\cos x+2\sin x=1

for

0^\circ\le x\le360^\circ

.

$x\approx21^\circ,159^\circ,201^\circ,339^\circ$
$x\approx21^\circ,159^\circ$ only
$x\approx108^\circ,320^\circ$
$x\approx69^\circ,111^\circ,249^\circ,291^\circ$

Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.

Loading problem…