Step 1:

The equation is and the point is .

The slope of the tangent line is equal to the derivative of the function at .

Apply derivative on each side with respect to x.

.

Apply derivative rule .

.

Apply inverse trigonometric derivative rule .

Step 2:

The slope of the tangent line is .

At the point the slope is, substitute point in .

.

Slope of the tangent line is .

The point-slope form of line equation is .

Substitute the point and slope in the above equation.

The equation of the tangent line is .

Solution:

The equation of the tangent line is .