The range of \( f(\theta)=3 \cos ^{2} \theta-8 \sqrt{3} \cos \theta...

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The range of \( f(\theta)=3 \cos ^{2} \theta-8 \sqrt{3} \cos \theta \cdot \sin \theta+5 \sin ^{2} \theta-7 \) is given
\( \mathrm{P} \) by

W)
(a) \( [-7,7] \)
(b) \( [-10,4] \)
(c) \( [-4,4] \)
(d) \( [-10,7] \)
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