Convert $42{52}^{\text{'}}{30}^{\text{'}\text{'}}$ to DD and $98\mathrm{.}489$ into DMS$.$

Convert $77\mathrm{.}9124$ to DMS and $91{46}^{\text{'}}{45}^{\text{'}\text{'}}$ to DD$.$

Convert $75\mathrm{.}6649$ to DMS and $62{32}^{\text{'}}{29}^{\text{'}\text{'}}$ to DD$.$

The back$-$bearing of $PQ$ is $N55{45}^{\text{'}}{36}^{\text{'}\text{'}}W.$ What is the fore bearing of $PQ?$

The back$-$bearing of $xY$ is $S25{25}^{\text{'}}{36}^{\text{'}\text{'}}E.$ What is the fore bearing of

$xY?$