Pearson Algebra 2 Common Core, 2011
PA
Pearson Algebra 2 Common Core, 2011 View details
2. Solving Trigonometric Equations Using Inverses
Continue to next subchapter

Exercise 27 Page 916

Start by using the Zero Product Property. Then, draw the unit circle on the coordinate plane.

radians, radians, radians

Practice makes perfect

To solve the given equation, we will first use the Zero Product Property to solve for Then we will use the unit circle to find the exact values of that satisfy the equation.

Solving the Equation for

Let's start by using the Zero Product Property to solve the equation for

Finding the Exact Values of

We obtained two values for The cosine of an angle in standard position is the coordinate of the point of intersection of its terminal side and the unit circle.