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Which of these four equations can be solved by some real angle?
Acos x = -2
B3 sin x = 2
C2 cosec x = 1
Dsin x = 1.5
Answer & Solution
Correct answer: B. 3 sin x = 2
3 sin x = 2 gives sin x = 2/3, which lies in [-1, 1]; the others need values outside the possible range.
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