Solving Trig Equations with a Calculator

Find all solutions to cos θ = -0.24 over the interval [0°, 360°).

• 103.89°

• 283.89°

• 256.11°

• None of these are correct

Find all solutions to sin θ = 0.87 over the interval [0°, 360°).

• 60.45°

• 150.45°

• 119.55°

• None of these are correct

Find all solutions to tan θ = -2.34 over the interval [0°, 360°).

• -66.86°

• 293.14°

• 113.14°

• Does not exist

Find all solutions to cos θ = 0.56 over the interval [0, 2π).

• 0.98

• 2.16

• 5.30

• None of these are correct

Find all solutions to sin θ = -0.13 over the interval [0, 2π).

• 6.15

• -0.13

• 3.27

• None of these are correct

Find all solutions to tan θ = (24/21) over the interval [0, 2π).

• 0.85

• 2.29

• 3.99

• None of these are correct

Which quadrants are answers restricted to in order to find angle measures for inverse sine in your CALCULATOR?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Which quadrants are answers restricted to in order to find angle measures for inverse cosine in your CALCULATOR?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Which quadrants are answers restricted to in order to find angle measures for inverse tangent in your CALCULATOR?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Which quadrants are sine positive?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4