Inverse Trig-Unit Circle

sin (π/2)

• √3/2
• √2/2
• 1/2
• 1

cos (π/4)

• √3/2
• √2/2
• 1/2
• 1

cos(π)

• √3/2
• -√2/2
• -1
• 1

tan(3π/4)

• √2/2
• -√2/2
• √3/2
• -1

What range of angles for inverse cosine?

• [0, π]
• [0, 2π]
• [-π/2, π/2]
• [π/2, 3π/2]

What is the range of angles for inverse sine?

• [0, π]
• [0, 2π]
• [-π/2, π/2]
• [π/2, 3π/2]

What is the range of angles for inverse tangent?

• (0, π/2)
• (-π/2, π/2)
• (0, π)
• (0, 2π)

Evaluate: cos^-1(√3/2)

• π/3

• 2π/3

• π/6

• 5π/6

Evaluate:  arctan(1)

• π/6
• π/4
• π/3
• π/2

Evaluate:  sin^-1(-√2/2)

• -π/4
• 3π/4
• 5π/4
• 7π/4