Trig Addition Formulas Flashcards
Memorize
1
Q
sin(s+t)
A
sin s cos t + cos s sin t
2
Q
sin(s-t)
A
sin s cos t - cos s sin t
3
Q
cos(s+t)
A
cos s cos t - sin s sin t
4
Q
cos(s-t)
A
cos s cos t + sin s sin t
