Math, asked by akashec17, 1 month ago

a) Prove geometrically that cos(x + y) = cos xcos y-sin xsin y and hence show that cos2x = cos² x-sin²x.

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Answered by guptaumas99

0

Answer:

bro i dont know sorry sorry

Step-by-step explanation:

plz mark me as BRAINLIEST answer plz

Answered by prvnsharma666

0

Answer:

sorry I don't know

Very sorry please

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