Evaluate the integral.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}5si{n}^{2}xco{s}^{2}xdx$

Use a power$-$reducing formula to write the integrand using lower powers.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}5si{n}^{2}xco{s}^{2}xdx={\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}dx$

Evaluate the integral.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}5si{n}^{2}xco{s}^{2}xdx=$

Evaluate the following integral.

${\displaystyle \underset{0}{\overset{3}{}}}\frac{dx}{\sqrt[\phantom{2}]{36-x^2}}$

Which substitution transforms the given integral into one that can be evaluated directly in ferms of en

A$.x=6tan$

B$.x=6sec$

C$.x=6sin$

For this substitution, dr $=$ d$9.$

${\displaystyle \underset{0}{\overset{3}{}}}\frac{dx}{\sqrt[\phantom{2}]{36-x^2}}=$

$($Type an exact answer, using $z$ as needed.$)$

F

F$2$

F$3$

F$4$

$55$