In Exercises $9$ through $12$, show the indicated angles graphically.

a. $240^{\circ}$ $\quad$ b. $405^{\circ}$

Give an expression that generates all angles coterminal with the angle. Let n represent any integer:

$$30^{\circ}$$

In this exercise, determine the values of the given trigonometric functions directly on a calculator. The angles are approximate.

$$\sin 703.9^{\circ}$$

In this exercise, determine the values of the given trigonometric functions directly on a calculator. The angles are approximate.

$$\tan 436.42^{\circ}$$

Write down the values of the following angles

$$\mathrm{g} \arccos \left(-\frac{1}{2}\right)$$

In this exercise, determine the values of the given trigonometric functions directly on a calculator. The angles are approximate.

$$\cos 326.72^{\circ}$$

Give an expression that generates all angles coterminal with the angle. Let n represent any integer:

$$45^{\circ}$$

Evaluate the six trigonometric functions for the angles given below, using a calculator if necessary.

$$\theta=-125^{\circ}$$

If two sides of a triangle have equal lengths, then what is true about the angles opposite those sides?

Find $\cos (A+B)$ if $\cos A=\frac{5}{13}$ and $\cos B=\frac{35}{37}$ and A and B are first quadrant angles.

Evaluate the six trigonometric functions for the angles given below, using a calculator if necessary.

$$\theta=5 \pi$$

In this exercise, determine the values of the given trigonometric functions directly on a calculator. The angles are approximate.

$$\sin 141.3^{\circ}$$

A student wants to know if a triangle can have two right angles. How do you respond?

In this exercise, determine the values of the given trigonometric functions directly on a calculator. The angles are approximate.

$$\sin 565.24^{\circ}$$