Pythagorean Identities for Trigonometric Functions (Precalculus - Trigonometry 10)

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This semester I will be graduating with a degree in biomedical engineering and in all honesty, I can say I would not have been able to do so without the help of your videos getting me through all my calc classes. Thank you Professor Leonard!!!

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istg this was my sign to keep going tysm

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Started watching your pre algebra series in 2018 and just yesterday I finished calc 3 series thank you professor Leonard 🙌🏻

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Heck yes. Appreciate the videos! My first paycheck goes to you, wouldn't have passed uni calc otherwise!

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Hitting the like button before enjoying your video then realizing that It has been a long time since I graduated... still worth it.

[@georgesadler7830]

Professor Leonard ,thank you for another excellent video/lecture on Pythagorean Identities for Trigonometric Functions in Precalculus.Theses great Pythagorean Identities are powerful tools in Mathematics,Physics and all level of Engineering. I used these Identities in Electrical Engineering Classes at the University of Maryland, College Park in the late 1980's/early 1990's.

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best professor I just finished your calc3 full course rn

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I love solving challenging trigonometry, calculus, algebra and geometry maths problems. Thanks

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nobody asked

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@@quant-prep2843 alright

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@@quant-prep2843 i ask him

[@shorndrack]

Nice. Glad to see these positive comments.

[@jermainemaragh]

In two minutes you cleared up some much confusing I was having. Thank you.

[@engineering_chaos2749]

Thank you for this video. It helped me understand the concepts better than what the professor taught in three hours.

[@bv6257]

1.57 mins in the lecture, and you have alrrady surpassed a lot of teachers and professors

[@Woodman34x]

It's crazy how in life how everything works together. For instances, I am taking a classed called signal and systems. We are going over even and odd Trig problems

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So stoked for these videos! Thanks Prof :)

Very practical way to explain this. Thanks Prof Leonard! 💯

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Just came here to give you a big like. 👏👍👍👍

[@lulberserk1418]

Professor Leonard you should do a Linear Algebra course!

[@guidofeliz8384]

Now the course get interestingly fun.

[@caseyshaw8253]

Thank you professor Leonard. I am currently doing a degree in biomedical engineering and your lectures have been my saving grace! Is there any chance you could do a lecture on the Fourier series?

[@Andrew-jw2qs]

Love you Prof!

[@ifranahmed1718]

You are one of the best maths lecturers.Sir I have a request like you took these amazing lessons can you please take some classes on analytical geometry

[@zeeshan7372]

Really helpful professor L

[@khadeejasoomro5840]

sir please expalin us proof methods with examples they are really difficult for beginners like me.........pleaseee......and you are GREAT.....We all love you!!!!!!!!

[@ojingaj30]

Bravo!!! Bravo!!!

[@mattrhoades9487]

when are you adding these lectures 7 through 10 to the main Precalculus playlist?

[@foreseen8937]

the 60fps is so clean

[@mathsandsciencechannel]

Yep

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Thank you. I'd like to order the "BOX COLLECTION" please.

[@aurelionsol5134]

Teachers got to use their hands more; his hand movements are really helpful.

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Thank you for sharing this knowledge

[@mathsandsciencechannel]

Great.

[@jacobandersen9912]

Love you

[@mathsandsciencechannel]

Same here

[@beulahwilliams8885]

This make sense and meaning but I wish to explain including elaborate

[@practicecoach777]

goodday, what do you mean by even or odd? Is odd meaning it's not symmetrical? Really not sure about this . Even (2, 4, 6,8) and odd (1, 3,5,7) is my only reference.

[@Zeeshanhassan884]

Even function are symmetric about y-axis and odd function are symmetric about origin. In X-y coordinate system

[@topazchen8313]

i need fourier series pleaseeee

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[@matheusvivan3434]

Professor Leonard, you like Formula 1?