Given a right triangle where the length of the side opposite angle $\theta$ is $h=8.1$ inches and the hypotenuse is $k=9$ inches, what is $sin\left(\theta \right)$?

Which trigonometric functions have a domain of $[-1,1]$?

Triangle QRS is a right triangle with one angle measuring $90°$ and another angle measuring $38°$. What is the measure of the third angle in degrees?

Which of the following angle measurements might you find in a right triangle?

Triangle $BCD$ is rotated $80°$ clockwise about the origin to form $KLM$. If $\angle KLM=30°$, what is the sine of angle $\angle KLM$?

If $m\angle ABC$ = $20°$ in a right triangle, what is the value of $\sin 20°$ rounded to two decimal places?

Rhombus WXYZ is graphed on a coordinate plane with vertices at $(0,0)$, $(4,0)$, $(2,3)$, and $(-2,3)$. What is the perimeter of the rhombus?

Given a right triangle, what is the measure of angle $A$ if $m\angle A$ is the smallest angle and the other two angles are $90°$ and $71°$?

In a right triangle, one of the acute angles measures $60°$. What is the measure of the other acute angle?