Chapter 4-1 Radian and Degree Measure

Advanced Math Notes

Date:_______________

Angles:

+ angles

- angles

Standard Position for Angles:

Coterminal Angles:

• 2 angles with the same intitial and terminal sides.

Greek Symbols used for angles:

• Alpha

• Beta

• Theta

• As well as uppercase A,B,C.

Radian Measure:

• 1 radian = measure of a central angle (θ), that intercepts an arc (s) = to the radius (r) of the circle.

Circumference of a circle:

Sketching and finding “coterminal” angles:

Add or subtract 2 from angle

1. 13 3. -2 6 3

2. 3 4

Complementary and Supplementary angles:

• Complementary • Supplementary

Examples: if possible, find the complement and supplement of the angles.

A. 2 5

B. 4 5