Trigonometry
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Determine the value(s) of the given trigonometric expression if sinx=13\sin x=\frac13.
secx−cosxcosx\frac{\sec x-\cos x}{\cos x}
18\frac18
−18-\frac18
−18,18-\frac18,\frac18
−14,14-\frac14,\frac14