Math, asked by ishi1510, 3 months ago

please answer this as soon as possible it's very urgent

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Answered by dev12339

0

Step-by-step explanation:

by taking L. H. S.

cos x +sin(270+x)-sin(270-x) +cos(180+x)

=cosx-cosx +cos x -cosx (by using astc trick)

=0

=R.H.S. proved

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