Radian Measure Answers
An angle measures Seven-ninths Pi radians. What is the degree measure of the angle?
rotations
4
inches
125.7
How many radians is -135°?
An angle measures 4.3 radians. To the nearest degree, what is the measure of the angle? degrees
246
Compare an angle having a measure of 120° with that of an angle whose measure is StartFraction 5 pi Over 6 EndFraction radians. Explain your reasoning.
120° is smaller than 5π/6 radians. Converting 120° to radians gives 2π/3 radians, and 2π/3 < 5π/6.
A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of StartFraction 2 pi Over 3 EndFraction
What is the approximate length of arc s on the circle?
2 pi 4 pi 8 pi
An angle measures radians. What is the degree measure of the angle?
How many radians is -135°?
An angle measures 4.3 radians. To the nearest degree, what is the measure of the angle? degrees
246
Compare an angle having a measure of 120° with that of an angle whose measure is radians. Explain your reasoning.
To compare the angles, write them in terms of the same unit of measure. Convert radians, or convert radians to . is smaller than radians.
Which of the following did you include in your explanation?
A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of
What is the approximate length of arc s on the circle?
rotations
4
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