Trigonometric EquationMedium
Question
If f(θ) = 5 cos θ + 3 cos 
+ 3, then range of f(θ) is -
+ 3, then range of f(θ) is -Options
A.[-5, 11]
B.[-3, 9]
C.[-2, 10]
D.[-4, 10]
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