Prephub - Find the value of cos frac5 pi4

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Question

Difficulty Level:

Easy

MCQ

Find the value of $\cos (\frac{5 \pi}{4})$

Select all that apply :

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

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

$\frac{\sqrt{3}}{2}$

$\frac{\sqrt{3}}{2}$

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