Recent content by Jatt

1. Find point of intersection of a line and a plane

Yea your right that's what i meant -2(Eq 1) + Eq 2. I was doing it right all along? Cool. I understand what I have to do next it seems much more less confusing than before. Thanks a lot now I can finally finish this question off. :D Just finished I got the point of intersection between the...
2. Find point of intersection of a line and a plane

Homework Statement Find the point of intersection of the line and the plane. Line: x=4+k y=2-2k z=6+3k Plane: x=-1-s+2t y=1-s+4t z=2+3s+t Homework Equations None. The Attempt at a Solution So I'm not that well informed with how...
3. Confused about double angle identities

yea then i get: cos2xcosx + sin2xsinx + cos2x + cosx
4. Confused about double angle identities

lol, sorry for not stating this, but i have to prove not solve.
5. Confused about double angle identities

dosen't matter i was able to solve it, but here's another problem which I'm now stuck with. cosx+cos2x+cos3x=cos2x(1+2cosx). I've tried many things with this problem, but always seem to get lost. The only given identites which I'm given to use: cos2x=cos^2x-sin^2x cos2x=2cos^2x-1...

yup.
7. Confused about double angle identities

Homework Statement sin4x-sin2x/sin2x=cos3x/cosx Homework Equations sin2x = 2sinxcosx The Attempt at a Solution LS = sin(2x + 2x) - sin2x/sin2x = sin2xcos2x + cos2xsin2x - sin2x/sin2x = 2sin2xcos2x - sin2x/sin2x This is where i get stuck... I don't know what happens if you try...