91Ó°ÊÓ

What do the \(x\) - and \(y\) -coordinates of the points on the unit circle represent?

Explain how the cosine of an angle in the second quadrant differs from the cosine of its reference angle in the unit circle.

Explain how the sine of an angle in the second quadrant differs from the sine of its reference angle in the unit circle.

For the following exercises, state the reference angle for the given angle. $$ 100^{\circ} $$

For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a calculator and round to three decimal places. $$ 250^{\circ} $$

For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a calculator and round to three decimal places. $$ 150^{\circ} $$

For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a calculator and round to three decimal places. $$ \frac{4 \pi}{3} $$

For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a calculator and round to three decimal places. $$ \frac{2 \pi}{3} $$

For the following exercises, find the requested value. State the domain of the sine and cosine functions.

Tangent and cotangent have a period of \(\pi\) . What does this tell us about the output of these functions?