$\"\"$

\

The curves are $\"\"$ and $\"\"$

\

Find area.

\

Area is region below the curve and above the $\"\"$ - axis is $\"\"$

\

The curve is $\"\"$ .

\

Differentiate on each side with respect to $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Change in integral limits:

\

$\"\"$ then $\"\"$ .

\

$\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ and $\"\"$ and limits $\"\"$ in the area formula.

\

$\"\"$

\

$\"\"$

\

Trigonometric double angle formula: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Area is enclosed by the curve is $\"\"$ sq-units.

\

$\"\"$

\

Area is enclosed by the curve $\"\"$ is $\"\"$ sq-units.