Math, asked by kumud92, 1 year ago

cos 20 degree into cos 40degree into Cos 60 degree into cos 80 degree = 1/16

Answers

Answered by desiboyz3

2

cos 60 = 1/2= n²/d⁴= 1²/2⁴= 1/16 will be the answer.
direct method

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