Verifying Trigonometric Identities

This trigonometry video tutorial focuses on verifying trigonometric identities with hard examples including fractions. It contains plenty of examples and practice problems. This video tutorial contains plenty of tips and tricks that will help you on your homework or upcoming worksheet assignment. It explains when to convert secant and tangent into sine and cosine, when to multiply by the conjugate or get common denominators in addition to knowing when to factor a trigonometric trinomial equations or a difference of perfect squares expression.

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[winterlilac]

After struggling with this for a week, I said to myself, "Maybe the organic chem guy has a video. He has videos on like everything." Lo and behold, it's the first search result. I'm always amazed by the depth of knowledge and skill on this channel. Infinite thanks from a college student just trying to pass their precalc class!

[coltonstankovits]

I read the title as “Terrifying Trigonometric Identities”

[dine]

Eversince online classes started, I'd always go to this channel to learn more about our Pre-Calculus subject and I've been getting pretty high grades. Thank you!

[daylight]

i think it's your voice that calms me down and how you explain out every little thing instead of talking fast and merging steps together. You are the best teacher out there

[Jessicathebright]

mans be getting 1.5k views in mere hours and 2.58 million subscribers using comic sans. he has bested the algorithm and now he reigns supreme, free to use comic sans wherever he pleases

[irisgirlmusic]

Thank you, your videos have been a lifesaver for math this year. Unfortunately the instruction I'm receiving at school this year contains limited examples and my teacher isn't exactly the best at explaining and often tends to jump around on notes which means I get lost easily, plus we're learning a whole year's content in like 9 weeks and it's a cram. Again, thank you so much for making those videos, I love how you give lots of examples and explain in a step by step manner which I really miss
from last year's teacher.

[sasugamegami]

"Is not a very easy topic" when this line comes from this guy, you know you're doomed

[amessman]

Nothing the comments don't say already... Your videos have once again been my secret weapon when it comes to mastering a topic I had no clue about just minutes ago.
Watching this a couple hours before a Trig exam and now feel confident enough to take it.

[ekon]

The amount of pain and confusion with this topic is off the charts, I had this test and while I was doing the test I was damn confident about my answers but then the results came and I had like 3 items done correctly, This video really helped me

[yoshzumi]

i am panicking a day before my test that I couldn't solve simple questions like these. But now, I can solve some tough questions from my textbook. Thank you so much! You are a life saver!

[hellod]

Having a test in less than 20 minutes and I’m watching this 😆

[giahypham]

Hey just here to say thank you for all the contents that you do. I passed my calculus course last semester, and it’s all thanks to your explanation. Wish you the best this year!

[laure]

Cramming for our quiz and I actually didn't learn anything from my teacher. My head aches looking at those things on the board and I thought I couldn't understand anything and thay I wouldnt understand a thing. Although I'm a bit late with the lesson, i would still want to thank you cuz you're saving my life.

[Kaonashimusic]

i thought the title was "Terrifying Trigonometric Identities" 😂

[tawandadevera]

What a clear explanation.You have been sent on Earth to make students life easier.I thank you from the bottom of my heart

[stickshiftstarship]

In class this was so frustrating I almost cried. But for the first two examples I paused the video and did exactly what you did. I feel a lot better now.

[jlk]

Would be appreciated if you did one about simplifying trig expressions. Been kinda confusing and difficult finding a way to rewrite problems while having no idea if I'm doing it right

[onlylonelystars]

THANK GOD FOR THIS VIDEO!!! I was struggling with this concept for DAYS and a 24 minute video answered absolutely every question I had. Curse you, K12!

[Murk.mp]

never knew this was a recent upload. shows how timeless his stuff is xD

[MC-eqpi]

THIS VIDEO WAS A LIFE SAVER!!! helped me gain confidence knowing I could make mistakes and have the questions and errors I made be explained!!! ever since I started watching and doing the practice problems in the video my math test grades have gone from 70s and 40s to 95s and