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Question
If $${\text{0}} \leqslant \theta \leqslant {90^ \circ }$$   and $$4{\cos ^2}\theta $$   - $$4\sqrt 3 \cos \theta $$   + 3 = 0 then the value of $$\theta $$ is?
Options:
A .  30°
B .  90°
C .  45°
D .  60°
Answer: Option A

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