The Radian Measure

Which of the following is equivalent to 480 degrees

Find the exact length of the arc intercepted by the given central angle:

Find the radius of the circle:

• 2

• 4

• 6

• 8

Find the measure of each central angle (in degrees):

• 2

• 100

• 115

• 130

Fill in the blank: If the radius of a circle is doubled, the length of the arc intercepted by a fixed central angle ______?

• is also doubled

• is tripled

• is halved

• remains the same

A rope is being wound around a drum with a radius of 0.8725 ft. How much rope will be wound around the drum if the drum is rotated through an angle of 39.72°?

• 0.6049 ft

• 1.210 ft

• 17.33 ft

• 34.66 ft

Tacloban City, Leyte and General Santos City are 574 km apart and lie on the same north-south line. The latitude of Tacloban City is 11.25° N. What is the latitude of General Santos City?

Note: Use r = 6400 km for the radius of Earth.

• 5.83° N

• 6.11° N

• 6.37° N

• 7.04° N