### Home > CCA2 > Chapter Ch7 > Lesson 7.1.5 > Problem 7-84

7-84.

Sketch a graph of .

Is it a function?

Does each

value on the graph of the function have only one correspondingvalue?What are its domain and range?

Domain:

Range:Draw a central angle that measures

radians. If you remove this wedge of the circle, how much area remains? See the unit circle graph below.

What portion of the circle is shaded?Since

is of the total angle in a circle, the remaining area will be of the total area.