Math, asked by ayushsrivastava1221, 7 months ago

what is the value of 2cosA ?

Answers

Answered by palak0957

0

Answer:

cos (A+B)+cos (A-B)

Step-by-step explanation:

2cosAsinB =sin(A+B)-sin(A-B) 2cosAcosB=cos(A+B) +cos (A -B)

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