6.1-6.5 Review

Find cos^-1(-√2/2)

• 2π/3

• -π/3

• 3π/4

• -π/4

Find cot^-1(0)

• 3π/2

• π/2

• π

• 0

Which of these is not the same?

• sin^-1 (0)
• cos^-1 (1)
• tan^-1(1)
• sec^-1(1)

tan(sin^-1(-1/2))

• √3
• √3/3
• -√3
• -√3/3

cos^-1(tan(-π/4))

• 0
• π
• π/4
• 3π/4

• 11√13/39

• 2/11

• 3√13/11

• 2√13/39

Find the solution on the interval [0, 2π)

• 7π/6
• 11π/6
• 7π/6; 11π/6
• 7π/6+2πn; 11π/6+2πn

Find the solution over the interval [0, 2π)

• π/6; 5π/6
• π/6; 5π/6; 7π/6;11π/6
• 7π/6;11π/6
• π/6; 7π/6

Solve: 2cos(2x)= -√2

Simplify the trig expression.

• sinx
• cosx
• cotx
• tanx