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What is the answer for the formula of cos (A+B) ----------------------------_____________________________:------------------------

What is the answer for the formula of cos (A+B)  ----------------------------_____________________________:------------------------

Grade:8

2 Answers

Bharath
90 Points
2 years ago
My dear friend,
The correct answer for which you
Asked
is cosa+b=cosAcosB-sinAsinB.
I think it is useful for you
thank you. 
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