Radian Measure

Let's Recap!

Radian is a different unit to measure angle.

• TRUE

• FALSE

The correct way to conver 5.6 rad to degree is......

What is 0 degrees in radians? 

• 2π 

• 0

• π

•  π/2

What is the radian equivalent of 210 degrees?

Convert π radians to degrees.

• 90⁰

• 180⁰

• 360⁰

• 60⁰

The length of an arc is 18cm and the radius of the circle is 6cm. What is the radian measure of the central angle?

• 3 radian

• 2 radian

• 4 radian

• 2π radian

A circle has radius 12 inches. A central angle intercepts an arc of length 36 inches. What is the radian measure of the central angle?

• 3 radian

• 2 radian

• 6 radian

• 9 radian

Find the arc length.

• 3π/4 ft

• 39π/4 ft

• 13π/4 ft

• 4π/13 ft

What is 4π/3 radians in degrees?
 

• 120

• 240

• 210

• 270