Ch 6 Trig and the Unit Circle (Math 3)

Front

What is a coterminal angle?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. To find a coterminal angle, you can add or subtract multiples of 360 degrees (or 2π radians).

Front

Find a coterminal angle to -10 degrees.

Back

350 degrees.

Front

Find a coterminal angle to -90 degrees.

Back

270 degrees.

Front

What is the value of cosine at 135 degrees?

Back

-\sqrt{2}/2.

Front

What is the sine ratio?

Back

Front

What is the cosine ratio?

Back

Front

What is the tangent ratio?

Back

Front

How do you find the missing side in a right triangle using the Pythagorean theorem?

Back

Front

Find the missing side if one side is 5 and the hypotenuse is 13.

Back

Front

What is the reference angle for 135 degrees?

Back

The reference angle is 180 degrees - 135 degrees = 45 degrees.