TNVolnteer
New member
- Joined
- Nov 11, 2009
- Messages
- 4
My daughter has three problems that she just doesn't understand. Can anyone assist?
1) sin1/2xcosx-sin5/2xcosx = cos3x
2) cos2? – sin2? = 1-sin2?
3) sec4?-tan4? = 1+2tan2?
Thanks in advance!
1) sin1/2xcosx-sin5/2xcosx = cos3x
2) cos2? – sin2? = 1-sin2?
3) sec4?-tan4? = 1+2tan2?
Thanks in advance!