Solving trigonometric equations with multiple angles

👉 Learn how to solve trigonometric equations using the zero product property. The zero product property states that when the product of two quantities is equal to 0, then either of the quantities is zero. When solving factored trigonometric expressions which equals zero, each of the terms of the trigonometric expression is equated to zero and evaluated accordingly.

Organized Videos:
✅ Solve Trigonometric Equations
✅ Solve Trigonometric Equations by Factoring GCF
✅ Solve Trigonometric Equations by Zero Product Property
✅ Solve Trigonometric Equations by Factoring
✅ Solve Trigonometric Equations by Taking the Square Root
✅ Solve a Trig Equation with Half Angles
✅ Solve a Trigonometric Equations with Multi Angles Squared
✅ Solve Trigonometric Equations all Solutions and on an Interval
✅ Solve Trigonometric Equations with Multi Angles
✅ Solve Trigonometric Equations Learn About

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[andrewclarke]

If nobody else is going to say it than I will. Nice catch.

[brianmclogan]

haha thank you just trying to help one student at a time

[CodenameMolotov]

This helped a lot, thanks! I keep finding people online using inverse trig functions to solve these, but I know that I need this unit circle method for my class.

[jasminelesane]

Thank you so much you are a life saver

[cynthialy]

Thank you so much. Mr. Genius . Whenver i dont get anything about pre-cal, your lecture helps a lot. My teacher couldnt explain anything. But I'm still very lucky to find these great video. 

[Jaachmeister]

Why did I think this was difficult...? Thank you for clarifying this concept with me... It's so much easier than the way my prof taught it to me

[mustafamuhyadin]

Thank u very much. This really helped incredibly. I don't know How much I have to repay.
But I will keep watching ur videos

[martijnbroelman]

please help! :( I need to solve 2cos^2(x)-2sin(x) = 0. If i divide it by 2 I have cos^2(X) - sin(X) and I use the rule 1-sin^2(X) = cos^2(x) but now I have 1-sin^2(X)-sin(x) = 0 so sin^2(X)+sin(x)=1 and I cannot factor this ?? PLEASE HELP

[wotami]

Wouldn’t you need x to become the same value?

[kevinpaul]

lol at the 'sigh' at the end of the video. like, "damn i hate explaining this shit."

[yw]

Im confused on why you set both of them to zero and solved. Doesn't only 1 of them need to equal 0, the other one could equal anything.

[heygz]

Help me here please: (this might not match)
(1+ sin2A + cos2A)^2 = 4(cosA)^2 .(1+sin2A)