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If f(theta)=5costheta+3cos(theta+(pi)/(3...

If `f(theta)=5costheta+3cos(theta+(pi)/(3))+3` then range of `f(theta)` is

A

a) `[-5,11]`

B

b) `[-3,9]`

C

c) `[-2,10]`

D

d) `[-4,10]`

Text Solution

Verified by Experts

The correct Answer is:
D
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