AM-1021

Trigonometric equations

A Math · Secondary 3 · Hard · Trigonometric equations

Solve the trigonometric equation

4\sin^2\theta - 3 = 0

for

0^\circ \le \theta < 360^\circ

.

$60^\circ,\ 120^\circ,\ 240^\circ,\ 300^\circ$
$30^\circ,\ 150^\circ,\ 210^\circ,\ 330^\circ$
$60^\circ,\ 300^\circ$
$120^\circ,\ 240^\circ$

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