2. Trigonometric Functions on Right Triangles

Which of the following triangles is a $30°$-$60°$-$90°$ triangle?

How many sides does a regular polygon have if each interior angle measures $60°$?

In a unit circle, what is the measure in degrees of the central angle that corresponds to $\frac{1}{8}$ of a circle?

Which of the following triangles is both scalene and acute?

Which of the following is a type of special right triangle commonly studied in trigonometry?

Each leg of a $45°-45°-90°$ triangle measures $14\mathrm{cm}$. What is the length of the hypotenuse?

Triangle ABC is isosceles. If angle A measures $30°$, what is the measure of angle C?

Which set of numbers can represent the side lengths of a $30$-$60$-$90$ special right triangle?

In the context of special right triangles, what is the name given to an angle that measures $90°$?

A right triangle has one leg of length $9$ meters and the other leg of length $9$ meters. What is the length of the hypotenuse in meters?

The hypotenuse of a $45°$-$45°$-$90°$ triangle measures $n$ in. What is the length of one leg of the triangle?

Which of the following sets of side lengths could represent the side lengths of a $30$-$60$-$90$ triangle?

In a $30-60-90$ special right triangle, which angle measures $60°$?

An equilateral triangle has sides of length $s$. What is the length of its altitude?