April 1 - April 8 Practice (Radians)

What is 5π/6 radians in degrees?

• 180
• 150
• 360
• 120

Tags

CCSS.HSF.TF.A.2

What is 240 degrees in radians? 

• π/3
• 4π/3
• 5π/3
• 2π/3

Tags

CCSS.HSF.TF.A.1

What is π/3 radians in degrees? 

• 30
• 60
• 360
• 90

Tags

CCSS.HSF.TF.A.1

What is 225  degrees in radians? 

• 7π/4
• 5π/4
• 3π/4
• 5π/3

Tags

CCSS.HSF.TF.A.2

Which of the following are in the correct order from least to greatest?

• 20°, 2π/3, 5π/4, 190°

• 20°, 2π/3, 190°, 5π/4

• π/3, 75°, 180°, 4π/5

• π/3, 75°, 2π, 330°

Which equation gives the length of an arc, s, intersected by a central angle of 4.5 radians in a circle with a radius of 2 in.?

• s = 4.5 × 2

• s = 4.5 + 2

• s = 4.5 ⁄ 2

• s = 2 ⁄ 4.5

A circle has a central angle of 3 radians that intersects an arc of length 15 in. Which equation finds the length of the radius, r, of the circle?

• r = 3 × 15

• r = 3 + 15

• r = 3 / 15

• r = 15 / 3

A circle has a radius of 4 ft, and an arc of length 9 ft is made by the intersection of the circle with a central angle. Which equation gives the measure of the central angle, θ?

• θ = 9/4 radians

• θ = 4/9 radians

• θ = 36 radians

• θ = 13 radians

A circle has a central angle measuring 2π/5 radians that intersects an arc of length 20 cm. What is the length of the radius of the circle? Round your answer to the nearest whole cm. Use 3.14 for π.

• 8 cm

• 15 cm

• 16 cm

• 3 cm

Find the arc length.

• 3π/4 ft

• 39π/4 ft

• 13π/4 ft

• 4π/13 ft

Tags

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5