Calculus 1 Lecture 2.5: Finding Derivatives of Trigonometric Functions

Calculus 1 Lecture 2.5: Finding Derivatives of Trigonometric Functions

[AP-pmqy]

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[carlofatx]

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[cedhmgk]

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[absentvictim]

I can’t believe I just found this guy 6 weeks into the semester 😵
Thank you in advance for getting me through calculus!

[brianwahome]

I took a weekend break when you said: "We will get to the rest of it next time" at 3:53... Excellent work Prof.

[davidsphere]

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[rwharrington]

This is fascinating after taking your Precalculus/Trigonometry course. Knowing how you can use sin and cos to model oscillations and now being able to obtain the rate of change at a given time is really enlightening. I tried going through this course several years ago, and this lecture was so perplexing at the time, not knowing the prerequisites, that I gave up. Now 4 years later it seems really easy. Filling in that missing puzzle piece in your course list was clutch sir, and needed for so many of us.

[UndoneJigsaw]

I am preparing for my Calc class for spring 2019 with my former trig teacher in spring of 2016. I earned an A in trigonometry in her class. I got a B in Precalculus with a teacher that talked really fast. I had to take a 2 year break from school in 2017 due to life struggles but during those two years I have been watching math videos and looking over my notes. I am going to do whatever it takes to understand Calculus so I can go on towards Calc 2 and Calc 3 and Professor Leonard's videos has helped so much in understanding Math, thank you. I also noticed a pattern in the derivatives of trig functions. Every trig function that starts with a "C" (Cos, CSC, COT), the derivative is going to be a negative. Pair TAN with SEC and COT with CSC.

[dudestaytuned]

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[scenario]

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[Tee]

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[aliozcol]

Sir, from your previous lectures finally I've learned how to easily prove if a mathematical expression is true or not. Thank you for your work. I'm proud to say I can finally prove derivatives of trigonometric functions by myself without asking someone.

[a.robberts]

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[sangminha]

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[kookamour]

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[bshabuhaimed]

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Thank you my real life superman🙌

Ps(yeah I know he don't check comments)

[luciusirving]

Derivatives are awesome, easier than electromagnetism in physics. I could never do Coulomb's Law or any of those formulas related to electromagnetism like I do derivatives.

Non-Newtonian physics is even more complex than linear algebra.