Learn how to find the six trig functions using coterminal angles

The video tutorial emphasizes the importance of understanding coterminal and reference angles, especially for test preparation. It explains how to find coterminal angles by adding or subtracting 360 degrees or 2π. The tutorial also covers the unit circle, focusing on coordinates at specific angles, and demonstrates how to calculate trigonometric functions like sine, cosine, and tangent, highlighting cases where values are undefined.

What is a coterminal angle?

• An angle that shares the same initial and terminal sides

• An angle that is always 90 degrees

• An angle that is always 360 degrees

• An angle that is always 180 degrees

How do you find a coterminal angle for an angle greater than 360 degrees?

• Divide the angle by 2

• Subtract 180 degrees

• Add or subtract 360 degrees

• Multiply the angle by 2

What is the coterminal angle of -450 degrees?

• 270 degrees

• 180 degrees

• 90 degrees

• -90 degrees

What is the sine of -450 degrees?

• -1

• Undefined

• 0

• 1

Why is the tangent of -450 degrees undefined?

• Because the sine is 0

• Because the cosine is 0

• Because the angle is not on the unit circle

• Because the angle is greater than 360 degrees