Math, asked by harshal9104, 1 year ago

sin 15. cos 75 + cos(square)15

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Answered by krishtiwari07

9

Answer:

sin15.cos75+cos15.cos15

=sin15.cos75+cos15.sin75 {cos(90-@) =sin@}

= sin(15+75) = sin 90 = 1

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