M Minnie New member Apr 4, 2010 #1 Can someone help me prove these trig equations? (cosx/1+sinx)+(1+sinx/cost0=2secx (sinx+cosx)^2 cotx=cotx+2cos^2 x I also need help simplifying these double angle identities: sin2xcos2x 5-10cos^2 x Any help would be appreciated!!!!!!!!!!!!!
Can someone help me prove these trig equations? (cosx/1+sinx)+(1+sinx/cost0=2secx (sinx+cosx)^2 cotx=cotx+2cos^2 x I also need help simplifying these double angle identities: sin2xcos2x 5-10cos^2 x Any help would be appreciated!!!!!!!!!!!!!
