Trigonometry

Sum and Difference of Angles Identities

1.) Click to print the worksheet

2.) Watch video using worksheet

 

3.) Take the quiz

In this "State of the Triangle" teaching address, President ObaMATH explores how to apply sum and difference identities with trigonometry. Trig sum and difference formulas help us evaluate sin, cos, tan, csc, sec, and cot of non special right triangle angles, like sin 15°, for example. Um, get ready to sing with us, seriously? Seriously. YAY MATH!

  • Facebook App Icon
  • Twitter App Icon
  • Black Instagram Icon
  • YouTube Classic
  • LinkedIn Social Icon

Yay Math is a free and openly available public service. Any contribution towards this movement is deeply appreciated.

Sign up using QR code

Yay Math will always stay connected to the people. Reach out and share your story! This is not a math help line. It's a way for us to interact and say hi, directly.

© 2019 Yay Math™