$4\mathrm{.}6-4$ An angle$-$modulated signal with carrier frequency c $=2$ $106$ is

$$EM $($t$)=10$ cos $($c t $+0\mathrm{.}1$ sin $2000$t$)$

$($a$)$ Find the power of the modulated signal.

$($b$)$ Find the frequency deviation f$.$

$($c$)$ Find the phase deviation $.$

$($d$)$ Estimate the bandwidth of $$EM $($t$)$