Solving Trig Equations

Learn how to Solve Trig Equations in this free math video by Mario's Math Tutoring. We discuss some examples in this video utilizing both factoring and the unit circle to help us solve trigonometric equations.
0:17 Example 1 Solving 2sinx + 1 = 0
0:40 Using the Unit Circle to Solve
1:07 How to Write a General Solution
1:47 Example 2 4(cosx)^2 - 1 = 0
3:26 How to Group the Diametrically Opposed Solutions
4:28 Example 3 Factoring Trinomial and Setting Trig Factors to Zero
5:58 Example 4 Solve tan(3x) = 1 Multiple Angle Problem
8:40 Example 5 Using Calculator (tanx)^2 + tanx - 6 = 0
9:20 Factoring the Trinomial and Set Factors Equal to Zero
9:57 Using the Tangent Inverse on the Calculator
10:50 Finding Other Locations on the Unit Circle Since Calculator Only Gives Us 1 Solution
Related Videos:
Master the Unit Circle
• Master the Unit Circle!
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