Circular Measure Quiz

What is the formula for calculating the arc length of a sector?

• s = 2Rsin(θ/2)

• s = R²sinθ

• s = 1/2 R²θ

• s = Rθ

In the formula for the area of a sector, a = 1/2 R²θ, what unit should θ be in?

• Gradians

• Turns

• Radians

• Degrees

Which formula represents the area of a triangle in a circle?

• a = 2Rsin(θ/2)

• a = 1/2 R²θ

• a = 1/2 R²sinθ

• a = Rθ

How do you calculate the area of a segment?

• Area of triangle - Area of sector

• Area of sector - Area of triangle

• Chord length - Arc length

• Arc length - Chord length

What is the conversion factor from radians to degrees?

• Multiply by 360/π

• Multiply by π/360

• Multiply by 180/π

• Multiply by π/180

If you have an angle of 64 degrees, how do you convert it to radians?

• Multiply by π/360

• Multiply by 180/π

• Multiply by π/180

• Multiply by 360/π

What is the formula for the length of a chord in a circle?

• L = Rθ

• L = 1/2 R²θ

• L = 2Rsin(θ/2)

• L = R²sinθ

In the chord length formula, L = 2Rsin(θ/2), what unit should θ be in?

• Degrees

• Gradians

• Radians

• Turns

Which of the following is NOT a formula discussed in the video?

• L = 2Rsin(θ/2)

• L = R²θ

• a = 1/2 R²θ

• s = Rθ

What is the key difference in angle units for the formulas involving sinθ?

• θ should be in degrees

• θ should be in radians

• θ should be in turns

• θ should be in gradians