Math, asked by radhika89990, 8 months ago

COS 2a
cos a + sinº a
2-sin? 2a
II
cosa-sinº a

Answers

Answered by kirangusain84

0

Answer:

cos (2A) = cos2(A) − sin2(A) = 1 − sin2(A) − sin2(A) = 1 − 2sin2(A).

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