Sum and Difference Formulas

How to use the Sum and Difference Formulas to find the exact value of the sine, cosine or tangent of an angle. Timestamps: 00:00 Intro 0:12 Formulas for sine, cosine and tangent sum and difference formulas 1:09 Example 1 Finding 7pi/12 using the sine sum formula 3:31 Example 2 looks at condensing a cosine sum expression 4:37 Example 3 looks at working with the tangent difference formula Related Videos: Double Angle Formulas:    • How to Use Double Angle Formulas   Half Angle Formulas:    • Half Angle Formulas - How to Use   Organized List of My Video Lessons to Help You Raise Your Scores & Pass Your Class. Videos Arranged by Math Subject as well as by Chapter/Topic. (Bookmark the Link Below) http://www.mariosmathtutoring.com/fre... ➡️JOIN the channel as a CHANNEL MEMBER at the "ADDITIONAL VIDEOS" level to get access to my math video courses(Algebra 1, Algebra 2/College Algebra, Geometry, and PreCalculus), midterm & final exam reviews, ACT and SAT prep videos and more! (Over 390+ videos)    / @mariosmathtutoring