helpmewtrig
New member
- Joined
- Dec 4, 2008
- Messages
- 2
i have no idea how to verify these two trig identities
1. 2sec^2 x-2sec^2 x*sin^2 x-sin^2 x-cos^2 x=1
2. cos^3 x-sin^3 x/cos x-sin x = 1+sin x*cos x
if you could help with this i would be very grateful
THANK YOU
1. 2sec^2 x-2sec^2 x*sin^2 x-sin^2 x-cos^2 x=1
2. cos^3 x-sin^3 x/cos x-sin x = 1+sin x*cos x
if you could help with this i would be very grateful
THANK YOU