Question

Find the value of (1-2sin^2 30)

Answer 1

hey mate

given here

1 - 2sin^2 30°

we know ,

cos 2x = 1- 2 sin^2 x.

so,here

= cos (2×30°)

= cos 60°

= 1/2.

i hopes its helps u.

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@abhi.

Answer 2

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