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if f(theta)=acostheta+bsintheta then -sq...

if `f(theta)=acostheta+bsintheta` then `-sqrt(a^2+b^2)lef(theta)lesqrt(a^2+b^2)`
The expression `5costheta+3cos(theta+pi/3)+3` lies between

A

(-4,10)

B

(5,12)

C

(-5,12)

D

(-4,5)

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The correct Answer is:
A
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