$\"\"$

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The equation is $\"\"$ and the point is $\"\"$ .

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The slope of the tangent line is the derivative of the function at $\"\"$ .

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

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$\"\"$

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Inverse trignometry function of derivative: $\"\"$ .

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$\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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The slope is $\"\"$ .

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$\"\"$

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The point-slope form of a line equation is $\"\"$ .

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Substitute $\"\"$ and the point $\"\"$ in above equation.

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$\"\"$

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The tangent line equation is $\"\"$ .

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$\"\"$

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Graph :

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The equation is $\"\"$ and the point is $\"\"$ .

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The tangent line equation is $\"\"$ .

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$\"\"$

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$\"\"$

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The tangent line equation is $\"\"$ .

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Graph :

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The equation is $\"\"$ and the point is $\"\"$ .

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The tangent line equation is $\"\"$ .

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$\"\"$