Trig Proof 2
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Lesson Summary:
In this video, the instructor takes viewers through the step-by-step process of verifying two trig identities using fundamental and Pythagorean identities. The lesson emphasizes the importance of knowing these identities well and provides strategies for tackling more complex proofs. By working through both sides of the equation, the instructor demonstrates how to manipulate trig functions and use algebraic techniques to simplify expressions and arrive at the desired result.
Lesson Description:
Shows steps for proving (or verifying) Trigonometric Identities;
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you verify / prove trig identities?
- How do you verify that (1 + cot(x))^2 - 2*cot(x) = 1/((1 - cos(x)(1 + cos(x)))?
- How do you prove that sin(x)/(sin(x) + 1) = (csc(x) - 1)/cot^2(x)?
- What are some fundamental trig identities that you need to know to prove trig identities?
- What are the Pythagorean identities for trigonometry?
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Staff Review
This video goes through two more trig identities and shows how to verify them. All steps involved in making both sides look like each other are shown and explained. This is a great tutorial for learning to prove trig identities.
