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cos 56 ^(@) + cos 58^(@) - cos 66^(@) - ...

`cos 56 ^(@) + cos 58^(@) - cos 66^(@) - 4 cos 28^(@) cos 29^(@) sin 33 ^(@) =`

A

0

B

1

C

`-1`

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-TRANSFORMATIONS -LACTURE SHEET (EXERCISE-I Straight Objective Type Questions)
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