Math, asked by DivineFury, 1 year ago

please help me to prove this question

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Answered by MARK43

Use formula
cos(A-B)= cosAcosB+ sinAsinB
sin(A-B)= sinAcosB-cosAsinB
Open all brackets and you will see that everything will get cancelled out and answer =0

MARK43: Mark as brainliest

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