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If sin2A=2sinA.cosA and sin20°=k ,then the value of cos20°.cos20°cos80°.cos160°=?

If sin2A=2sinA.cosA and sin20°=k ,then the value of cos20°.cos20°cos80°.cos160°=?

Grade:10

1 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
3 years ago
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