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Trigonometry: Triangles to Functions

Review question

How many solutions does $\cos (\sin x)=\frac{1}{2}$ have?
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Ref: R8386

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Question

In the range \(0 \le x < 2\pi\) the equation \[\cos(\sin x) = \frac{1}{2}\] has

no solutions;
one solution;
two solutions;
three solutions.