$\"\"$

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The functions are $\"\"$ and $\"\"$ .

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Find the rate of change of $\"\"$ .

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The function is $\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$ .

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Derivative of secant function : $\"\"$ .

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$\"\"$ .

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Find the rate of change of $\"\"$ .

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The function is $\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$ .

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Derivative of cosecant function : $\"\"$ .

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$\"\"$ .

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$\"\"$

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Find values of $\"\"$ in the interval $\"\"$

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Rate of change of $\"\"$ is equal to the rate of change of $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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General solution of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$

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For $\"\"$ , $\"\"$ .

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$\"\"$ is not in the interval $\"\"$ , hence it is not considered.

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For $\"\"$ , $\"\"$ .

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For $\"\"$ , $\"\"$ .

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For $\"\"$ , $\"\"$ .

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$\"\"$ is not in the interval $\"\"$ , hence it is not considered.

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Therefore the solutions of $\"\"$ in the interval $\"\"$ are $\"\"$ and $\"\"$ .

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$\"\"$

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The solutions of $\"\"$ in the interval $\"\"$ are $\"\"$ and $\"\"$ .