In right triangle $PQR$, if angle $Q$ is the right angle, side $PQ$ = $7$ and side $QR$ = $8$, what is the measure of angle $R$? Round to the nearest degree.

In the context of right triangles, what does the trigonometric function $\tan$ (often abbreviated as tg) of an angle represent?

If you know the radius of the circle and the measure of an angle $\theta$ in standard position, which trigonometric function gives the ratio of the length of the side opposite $\theta$ to the hypotenuse in a right triangle?

Given a right triangle where angle $A$ is the right angle, what is the measure of angle $B$ if angle $C$ is $15°$?

Given a right triangle with an angle of $40°$ and a hypotenuse of length $10$, which equation can be used to find the length of the side adjacent to the $40°$ angle?

Given a right triangle with angle $gfe$, where the side adjacent to angle $gfe$ has length $a$ and the hypotenuse has length $h$, which equation can be used to find the measure of angle $gfe$?

Given a right triangle with an angle of $30°$ and opposite side $a$ and adjacent side $b$, which equation can be used to solve for $b$? $\tan (30°)$ =

Given right triangle JKL, where angle $K$ is the right angle, if $\mathrm{JK}$ = $5$, $\mathrm{KL}$ = $12$, and $\mathrm{LJ}$ = $13$, what is the value of $sinJ$?

Given a right triangle with vertices at $(0,0)$, $(4,0)$, and $(4,3)$, let point $z$ be $(4,0)$ and line $ab$ be the segment from $(0,0)$ to $(4,0)$. Which of the following points lies on the line that passes through point $z$ and is perpendicular to line $ab$?