Omar wants to determine $cos\theta$ in a right triangle. If the length of the adjacent side to angle $\theta$ is 5 units and the hypotenuse is 13 units, what is $cos\theta$?

Given a right triangle where angle $a$ has an opposite side of length $3$, an adjacent side of length $4$, and a hypotenuse of length $5$, use the triangle to evaluate each function: $\sin \left(a\right)$, $\tan \left(a\right)$, and $\sec \left(a\right)$.

In a right triangle, if angles $b$ and $c$ are the two non-right angles, what is the value of the product $\sin b\times \tan c$ and the product $\sin c\times \tan b$?

In a right triangle, one leg measures $7$ units and the other leg measures $12$ units. Find the measure of the angle opposite the side of length $7$ to the nearest degree.

In right triangle $JKL$, if $cos\left(K\right)$ = $\frac{24}{51}$, what is the length of the side adjacent to angle $K$ if the hypotenuse is $51$?

In right triangles, congruent angles always correspond to which of the following properties?

In a circle, the length of an arc intercepted by a central angle is $12mm$. If the radius of the circle is $8mm$, what is the measure of the central angle in radians?

In a right triangle, if one of the acute angles measures $27°$, what is the measure of the other acute angle?

In circle $O$, $AB$ and $CD$ are diameters. Arc $ED$ measures $170°$. What is the measure of arc $AE$?