Advanced Functions 7.6 Solving Quadratic Trigonometric Equations

Using factoring, substitutions of identities to get your equation in terms of one sine function we solve quadratic trig equations. Make sure that you always check the domain. Sometimes a solution that you get may be inadmissible because of the domain restriction.

[diyonfernando]

I cannot thank you enough for these videos! I also got my unit 7 test and got 100%. You are amazing!

[shinypearls]

Loved this video, helped me a lot, thank you 💕💕

[saims.]

When you were doing question 8c, you wrote one of the x values as around 0.096, when my calculator said around 0.96, is that correct, and to find the value of x in cos x = 1/ root 3, you take the inverse cos of 1/ root 3 right?

[tanya]

1:21 - doesn’t sin of 1/2 have a solution of pie - pie/6? from the 2nd quadrant