CW Exact Value of Trig Function

Front

What is the exact value of sin(7π/6)?

Back

-\frac{1}{2}

Front

What is the exact value of cos(-11π/3)?

Back

\frac{1}{2}

Front

What is the exact value of tan(-π/6)?

Back

-\frac{\sqrt{3}}{3}

Front

Define reference angle in trigonometry.

Back

The reference angle is the acute angle formed by the terminal side of an angle in standard position and the x-axis.

Front

What is the sine function?

Back

The sine function, sin(θ), is the ratio of the length of the opposite side to the hypotenuse in a right triangle.

Front

What is the cosine function?

Back

The cosine function, cos(θ), is the ratio of the length of the adjacent side to the hypotenuse in a right triangle.

Front

What is the tangent function?

Back

The tangent function, tan(θ), is the ratio of the sine and cosine functions: tan(θ) = sin(θ)/cos(θ).

Front

How do you find the exact value of a trigonometric function for angles greater than 2π?

Back

Subtract 2π until the angle is within the range [0, 2π].

Front

What is the value of sin(π/6)?

Back

\frac{1}{2}

Front

What is the value of cos(π/3)?

Back

\frac{1}{2}