
Steve S. answered 01/01/14
Tutor
5
(3)
Tutoring in Precalculus, Trig, and Differential Calculus
cos^2(x) / (1 - sin(x)) =
(1 - sin^2(x)) / (1 - sin(x)) =
(1 + sin(x)) * (1 - sin(x)) / (1 - sin(x)) =
1 + sin(x), x ≠ pi/2 + 2pi(n), n integer.
Steve S.
01/01/14