In the figure above, points $P$ and $Q$ lie on a circle with center $O$. If triangle $OPQ$ is a right triangle with right angle at $P$, and $OP=5$, $OQ=13$, what is the value of $PQ$ (denoted as $s$)?

Given a right triangle where angles $A$ and $B$ are acute and $A$ is supplementary to $B$, which of the following relationships is false?

The ? side of a triangle is the side next to the reference angle and connected to the right angle.

In a right triangle, if one of the non-right angles (angle $6$) measures $141°$, what is the measure of the other non-right angle (angle $5$)?

Given that $m\angle bgc=6x-13°$ and $m\angle cgf=4x+3°$, what is $m\angle bgf$?

In a right triangle, what is the definition of $\sin$ of an angle $\theta$?

Given a right triangle where the measure of angle $\angle 6$ is $32°$, what is the sum $m\angle 4+m\angle 5$ in degrees?

In a right triangle, what is the tangent ratio for angle $\theta$?

How many sides does a regular polygon have if each interior angle measures $160°$?