Find the values of : cos 315° - Vidyadip

Question

Find the values of : cos 315°

✓

Answer

$
\begin{aligned}
& \cos 315^{\circ}=\cos \left(270^{\circ}+45^{\circ}\right) \\
& \sin 45^{\circ}=\frac{1}{\sqrt{2}}
\end{aligned}
$

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