February 04, 2013
February 04, 2013
Proof of Difference Identity for Cosine
Part I: Law of Cosine
Part II: Distance Formula
Part III: Substitution
February 04, 2013
Proof of Sum Identity for Sine
Use Cofunction Identity and the Difference Identity for Cosine
February 04, 2013
Proof of Sum Identity for Tangent
Use Quotient Identity and Sum Identity for Sine and Cosine
February 04, 2013
February 04, 2013
February 04, 2013
February 04, 2013
More Practice
February 04, 2013
February 04, 2013