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

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?

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 $x$?

Triangle $ABC$ is rotated $100°$ counterclockwise about point $P$ to create triangle $\mathrm{A\text{'}}\mathrm{B\text{'}}\mathrm{C\text{'}}$. What is the measure of angle $\angle \mathrm{C\text{'}}\mathrm{A\text{'}}\mathrm{B\text{'}}$?

A gardener uses a grow light to grow vegetables indoors. If $m\wedge 1=8°$ and $m\wedge 2=7x-4°$, what is the value of $x$ if the two angles are complementary?

In a right triangle, if the length of the adjacent side is $1$ and the length of the opposite side is $\sqrt{3}$, what is the measure of the angle (in degrees) opposite the side of length $\sqrt{3}$?

In a right triangle ABC with right angle at $C$, if $\mathrm{AD}$ is the altitude from vertex $A$ to the hypotenuse $\mathrm{BC}$, which of the following is true about the relationship between the segments $\mathrm{BD}$, $\mathrm{DC}$, and $\mathrm{AD}$?