AM-992

Trigonometric equations

A Math · Secondary 3 · Hard · Trigonometric equations

Solve the equation

2\tan^{2}x-3=0

for

0^{\circ}\le x\le180^{\circ}

.

$50.2^{\circ},\ 129.8^{\circ}$ (to 1 d.p.)
$39.8^{\circ},\ 140.2^{\circ}$ (to 1 d.p.)
$50.2^{\circ}$ only
$129.8^{\circ}$ only

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