Sum and Difference of Angles Formulas in Trig with Examples

Описание: Explanation and examples of sum and difference formulas in trig (pre-calc/precalculus).

All the trig identities:
   • Видео  


More videos at
https://www.danthetutor.com/

Patreon Link (recurring donations):
https://www.patreon.com/user?u=84517584

Paypal Link (one-time donations):
https://www.paypal.com/paypalme/danth...