2. Trigonometric Functions on Right Triangles

In a right triangle, what is the longest side called?

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

In a right triangle, one of the acute angles measures $80°$. What is the measure of the other acute angle?

Given a right triangle where one of the acute angles is $30°$ and the hypotenuse is $10$, what is the length of the side opposite the $30°$ angle (let this length be $x$)?

In the diagram, point O is the center of the circle. If $m\angle \mathrm{ABC}$ = $70°$, what is $m\angle \mathrm{AOC}$?

In a right triangle, if one of the acute angles is $a$, what expression represents the measure of the other acute angle $x$?