Inactive Tutor answered 04/20/15
Tutor
New to Wyzant
(2 - 2sin2x) / cosx = 2(1 - sin2x) / cosx
sin2x + cos2x = 1 so 1 - sin2x = cos2x so this is equal to
2cos2x / cosx = 2cosx
Bob G.
asked 04/19/15Inactive Tutor answered 04/20/15
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.