Evaluate the following: cos(36° + A).cos(36° &min

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Evaluate the following:

cos(36° + A).cos(36° − A) + cos(54° + A).cos(54° − A)

[SC CGL 14 July 2023 Shift 2 With Answers]

A

cos 2A

B

cos A

C

sin 2A

D

sin A

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