a) \(\frac{\sqrt{3}}{\sqrt{2}}\)
b) \(\frac{1}{2}\)
c) \(\frac{\sqrt{3}}{2}\)
d) \(\frac{1}{\sqrt{2}}\)
2 cos 75° cos 15° =____________________
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answerhappygod
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2 cos 75° cos 15° =____________________
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