Math, asked by soumyaranjanpatel, 1 year ago

cos^2a+cos^2(a+b)-2cosacosbcos(a+b)=sin^2b

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Answers

Answered by abhishek111109
8
thanks for questioning.
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Answered by charjanomom12
0

Step-by-step explanation:

Using all basic identity this question can be solved

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