(1) Multiply. (1 + cos(t))(1 − cos(t))= __________________

Last updated: 8/11/2022

(1) Multiply. (1 + cos(t))(1 − cos(t))= __________________ (2) Simplify further using identity sin² (t) + cos² (t) - 1 (1 + cos(t)) (1 - cos(t))= ___________