Math, asked by shreyasrivastava2005, 7 months ago

cos (A+B) + cos (A - B) =.............................

Answers

Answered by Anendramishra3112008

1

Answer:

I hope it helps you ❤️❤️

cos(A+B)cos(A-B) = cos² A- sin²

Attachments:

Answered by jaideepluthra

0

Answer:

2cos(A)cos(B)

Step-by-step explanation:

cos(x)+cos(y)=2cos(x+y/2)cos(x-y/2)

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