AM-2536

Addition formulae

A Math · Secondary 4 · Medium · Addition formulae

Using the exact values of

\sin 30^\circ

and

\cos 30^\circ

, find the exact value of

\sin 15^\circ

.

$\dfrac{\sqrt6-\sqrt2}{4}$
$\dfrac{\sqrt6+\sqrt2}{4}$
$\dfrac{\sqrt3-1}{2}$
$\dfrac{\sqrt3}{4}$

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