Trigonometric Substitution | Calculus 2 Lesson 14 - JK Math

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How to Use Trig Substitution to Solve Integrals (Calculus 2 Lesson 14)

In this video we learn about how to solve integrals involving radicals using trigonometric substitution. We look at certain forms of radical expressions in an integral that can be rewritten using a trig function including sine, secant, and tangent. We discuss when to use each of those trig functions, and why this substitution method works. And of course we take a look at a couple example problems of using trig substitution to solve integrals, including a definite integral, where the process changes slightly.

This series is designed to help students understand the concepts of Calculus 2 at a grounded level. No long, boring, and unnecessary explanations, just what you need to know at a reasonable and digestible pace, with the goal of each video being shorter than the average school lecture!

Calculus 2 requires a solid understanding of calculus 1, precalculus, and algebra concepts and techniques. This includes limits, differentiation, basic integration, factoring, equation manipulation, trigonometric functions, logarithms, graphing, and much more. If you are not familiar with these prerequisite topics, be sure to learn them first!

Video Chapters:
0:00 When to use Trig Substitution
1:37 Rule for Substituting Sin(θ)
4:21 Rule for Substituting Tan(θ)
6:03 Rule for Substituting Sec(θ)
7:43 Summary of Trig Sub Rules
9:00 Example - Using Sec(θ)
22:19 Guidelines for Trig Substitution
23:05 Example - Using Sin(θ)
35:09 Example - Using Tan(θ) (Definite Integral)
51:02 Outro

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-Josh from JK Math

#calculus

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your videos are life saving! I love your channel, thank you so so much

didunoluwajohnson
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i wish i can subscribe 1000 times to this channel. My search for calculus tutorials has finally come to an end.

monday
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Thank you for explaining why things are how they are!

cynthiawu
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Thanks man im 15 and found calculus interesting but got stuck on trig sub and watched lots of vids but didnt understand alot till i came up on your vid which fully explains everything

Ysm.P
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Can you make a playlist teaching linear algebra please

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