L2 Flashcard: Unit Circle and Exact Values

Front

What is the exact value of sin 150°?

Back

1/2

Front

What is sin 0?

Back

0

Front

What is the exact value of cos 150°?

Back

-√3/2

Front

Which angle is co-terminal with -35°?

Back

325°

Front

In which quadrants is sinθ positive?

Back

1st and 2nd quadrants

Front

What is the definition of a co-terminal angle?

Back

Angles that share the same terminal side when drawn in standard position.

Front

What is the unit circle?

Back

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

Front

What are the coordinates of the point on the unit circle at 90°?

Back

(0, 1)

Front

What is the exact value of tan 45°?

Back

1

Front

What is the relationship between sin and cos for complementary angles?

Back

sin(θ) = cos(90° - θ) and cos(θ) = sin(90° - θ).