Math, asked by rajakumarnovtolia, 7 months ago

formula for cos c+ cos D.

Answers

Answered by tanaychowdary

1

Answer:

2 cos [(C + D) / 2]cos[(C - D) / 2]

Step-by-step explanation:

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Answered by venkateshpatil42

0

Answer:

it is cos c + cos D only .....

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