The number of solutions of \( |\cos x|=\sin x \), such that \( -4 \pi \leq x \leq 4 \pi \) is: (...

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The number of solutions of \( |\cos x|=\sin x \), such that \( -4 \pi \leq x \leq 4 \pi \) is:
(a) 4
(b) 6
(c) 8
(d) 12
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