Prove that if
Last edited by tony123 (2008-11-22 22:30:46)
Last edited by Daniel123 (2008-11-23 11:27:22)
You need to do a bit more work than that.
I have troublr with that too.
i need help!
By the way, you also need the conditionto ensure that and are not both .
I know very well this expression.I am studying this function in school.I like your work.Thanks for share this information.
squarring bot the equation then subtrac
now squarring above equation then add
now put the valu of cos(x+y) in (o)