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Cos1.cos2.cos3.cos4.cos5.cos6.cos7.cos8.cos9....cos29?

Cos1.cos2.cos3.cos4.cos5.cos6.cos7.cos8.cos9....cos29?

Grade:12th pass

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
use the formula for
cosc-cosd = 2cosc+d/2 cos c-d/2

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