15^ - 15^ is equal to : - Vidyadip

MCQ

$\cos 15^{\circ}-\sin 15^{\circ}$ is equal to :

A
$-\frac{1}{\sqrt{2}}$
B
$\sqrt{2}$
C
$-\sqrt{2}$
✓
$\frac{1}{\sqrt{2}}$

✓

Answer

Correct option: D.

$\frac{1}{\sqrt{2}}$

(D)

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