3. Unit Circle
Defining the Unit Circle
3. Unit Circle Defining the Unit Circle
7PRACTICE PROBLEM
The trigonometric function sin α is given. Find the value of cos α by using an appropriate Pythagorean identity. Note that α is an acute angle.
sin α = (√65)/9
The trigonometric function sin α is given. Find the value of cos α by using an appropriate Pythagorean identity. Note that α is an acute angle.
sin α = (√65)/9