Unit Circle Trigonometry

Front

What is the value of 45 degrees in radians?

Back

Front

Solve the equation: 4\cos x - 2 = 0

Back

Front

In which quadrants is cos θ positive?

Back

The 1st and 4th quadrants.

Front

What is the phase shift for the function y=4\sin(2\theta-\pi)+1?

Back

Front

Approximate the angle of rotation's degree measure for the angle 60 degrees.

Back

60°.

Front

What is the definition of the unit circle?

Back

A circle with a radius of 1 centered at the origin of the coordinate plane.

Front

What is the sine of 90 degrees?

Back

1.

Front

What is the cosine of 0 degrees?

Back

1.

Front

What is the tangent of 45 degrees?

Back

1.

Front

What is the relationship between sine and cosine in the unit circle?

Back

For any angle θ, sin(θ) = y-coordinate and cos(θ) = x-coordinate on the unit circle.