A) \[[0,\pi ]\]
B) \[\left[ 0,\frac{3\pi }{2} \right]\]
C) \[\left[ -\frac{\pi }{2},\frac{\pi }{2} \right]\]
D) \[[0,2\pi ]\]
Correct Answer: C
Solution :
(c): \[{{b}^{2}}-4ac\ge 0\Rightarrow {{\sin }^{2}}\theta -4(sin\theta -1)cos\theta \ge 0\]You need to login to perform this action.
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