### Home > PC > Chapter 10 > Lesson 10.2.1 > Problem 10-72

10-72.

If you are stuck, make a table with *θ*, *x*, and *y*. Then plot each (*x*, *y,*) point.

OR

If cos² *θ* + sin² *θ* = 1, then:

What is this the graph of?

10-72.

If you are stuck, make a table with *θ*, *x*, and *y*. Then plot each (*x*, *y,*) point.

OR

If cos² *θ* + sin² *θ* = 1, then:

What is this the graph of?