Trig Proof 3

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Taught by YourMathGal
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Meets NCTM Standards:
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 prove that (csc(x) + cot(x))/(tan(x) + sin(x)) = cot(x)*csc(x)?
  • What are some fundamental trig identities that you need to know to prove trig formulas?
  • What are the Pythagorean identities for trigonometry?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson goes through another more complicated trig identity proof. There are a couple of tricks that you can use to make the left side look like the right side. The more proofs you do, the easier they become. This is another great example of how to go about proving a trig identity.