Evaluating Trigonometric Unit Circles

cos (π/4)

• √3/2

• √2/2

• 1/2

• 1

cos(π)

• √3/2

• -√2/2

• -1

• 1

Choose the best match for the graph.

• 30^o

• 45^o

• 60^o

• 90^o

Choose the best match for the graph.

• 30^o

• 45^o

• 60^o

• 90^o

Evaluate sin(60°)

• 0

• 1

Find the exact value of the expression using the unit circle:

Mathematical Equivalence

ON

tan(2π) ​ ​ ​

Mathematical Equivalence

ON

sin(π/2) ​ ​

Mathematical Equivalence

ON

tan 7π/4

• -1

• 1

• √2/2

• undefined