Answered

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Which of the following completes the formula of cos (a + B) =
A. sin a cos B - cos a sin B
B. sin a cos B + cos a sin B
O C. cos a cos B- sin a sin B
OD. cos a cos B+ sin a sin B

Sagot :

phuyalshirsha

Answer:

cos a cos B-sin a sin B is the right answer

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