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Question
Difficulty Level:

Medium

MCQ

Find cos(17π12)\cos (\frac{17 \pi}{12}) exactly using an angle addition or subtraction formula.

Select all that apply :

2−64\frac{\sqrt{2}-\sqrt{6}}{4}

2+64\frac{\sqrt{2}+\sqrt{6}}{4}

2−54\frac{\sqrt{2}-\sqrt{5}}{4}

3+64\frac{\sqrt{3}+\sqrt{6}}{4}

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