Math, asked by allstar3, 8 months ago

sin(90°-a )sin a-cos(90°-a)cos a​

Answers

Answered by Anonymous
0

Answer:

Sin(90-a)= Cosa

And, cos(90-a) = Sina

thus putting this value ,

Cosa Sina - Sina Cosa

thus it will give zero as the answer.....

I hope it helps you....

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