Use a calculator to approximate the value of each expression. Give answers to six decimal places. sec 58.9041°

Give the exact value of each expression. See Example 5. cot 45°

Give the exact value of each expression. See Example 5. csc 60°

Concept Check Work each problem. For what angles θ between 0° and 360° is cos θ = sin θ true?

Use a calculator to approximate the value of each expression. Give answers to six decimal places. sec 222° 30'

Evaluate each expression.

$\(\cot\[\left\)(\(\frac{11\pi}{6}\]\right\))$

Evaluate each expression.

$\(\csc\)225\(\degree\)$

Evaluate each expression.

$\(\sec\[\left\)(\(\frac{\pi}{3}\]\right\))$

In Exercises 5–18, the unit circle has been divided into twelve equal arcs, corresponding to t-values of

0, 𝜋, 𝜋, 𝜋, 2𝜋, 5𝜋, 𝜋, 7𝜋, 4𝜋, 3𝜋, 5𝜋, 11𝜋, and 2𝜋.

6 3 2 3 6 6 3 2 3 6

Use the (x,y) coordinates in the figure to find the value of each trigonometric function at the indicated real number, t, or state that the expression is undefined.

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In Exercises 11–18, continue to refer to the figure at the bottom of the previous page.

sec 3𝜋/2