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 $71°$?

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

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 $sin\left(\theta \right)$?

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?

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

In right triangle $△PQR$, the angle bisector of $\angle PQR$ is $QE$. If $m\angle PQE=20°$, what is the measure of $\angle PQR$?

Given a right triangle where $\angle VUW$ = $4x+6$ degrees and $\angle WUT$ = $6x-10$ degrees, what is the value of $x$?

Which of the following is the correct definition of the sine function for an acute angle $\theta$ in a right triangle?