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If 1^circ=alpha radians, then the approx...

If `1^circ=alpha` radians, then the approximate value of `cos(60^circ1')`

A

`1/2+(alpharoot()3)/120`

B

`1/2-alpha/120`

C

`1/2-(alpharoot()3)/120`

D

`1/2+alpha/120`

Text Solution

Verified by Experts

The correct Answer is:
C
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