Compute using Trig Identities 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
2300 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Using Trig Identities to make computations.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you make computations using trig identities?
  • If cos(2A) = 1/3 and 360 < 2A < 450, what are cosA, sinA, and tanA?
  • How do you find cosA, sinA, and tanA if you know cos(2A)?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows how to compute cos, sin, and tan of an angle if you know the value of cos of twice the angle. All steps involved in making the computations are shown and explained very clearly in this lesson. Check out the next lessons in this series for more example problems.