AM-2512

Addition formulae

A Math · Secondary 4 · Medium · Addition formulae

Using the compound angle formulae, evaluate the exact value of

\sin 75^\circ

.

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

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