Trigonometric Functions and Unit Circle

Front

What is the value of sin(90°)?

Back

1

Front

What is the value of cos(0°)?

Back

1

Front

What is the value of sin(\frac{\pi}{2})?

Back

1

Front

What is the value of cos(\frac{\pi}{4})?

Back

\frac{\sqrt{2}}{2}

Front

What is the formula for tangent in terms of sine and cosine?

Back

tan(θ) = \frac{sin(θ)}{cos(θ)}

Front

What is the relationship between the sides of a right triangle and the unit circle?

Back

The hypotenuse is the radius (r), opposite side is y, adjacent side is x.

Front

What is the value of sin(0°)?

Back

0

Front

What is the value of cos(90°)?

Back

0

Front

What is the value of tan(90°)?

Back

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Front

What is the value of sin(30°)?

Back

\frac{1}{2}