Radians Degrees Co-Terminal Angles

To convert from degrees to RADIANS

To convert from radians to DEGREES

Which of the following angles are co-terminal to -75^o?

• -365^o, 75^o

• 285^o, -435^o

• 105^o, -255^o

• 425^o, -335^o

Find a coterminal angle to 45 degrees.

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

In circle O, the radius is 4, and the length of minor arc AB is 4.2 feet.  Find the measure of minor arc AB to the nearest degree.

• 90

• 60

• 55

• 113

What are co-terminal angles?

• angles that share the same terminal side

• angles that are supplementary

• angles that are complimentary

• angles that are opposite each other

What is a Radian?

• another name for pi

• a real number measurement

• a degree

• a what?

How do you convert from degrees to radians?

• multiply by the factor
  π/180

• multiply by the factor 180/
  π

• use your calculator

• ask siri