A $23\mathrm{.}1-$mW vertically polarized laser beam passes

through a polarizer whose polarizing angle is $28\mathrm{.}9$ from the

horizontal. What is the power of the laser beam when it

emerges from the polarizer?

$($in mW$)$

$4.$ A$5\mathrm{.}40$ B$6\mathrm{.}10$ C$6\mathrm{.}89$ D$7\mathrm{.}78$

E$8\mathrm{.}80$ F$9\mathrm{.}94$ G$11\mathrm{.}23$ H$12\mathrm{.}6$