- #1
TheDestroyer
- 402
- 1
Hi guyz, as we know we have some known relations in the trigonometric functions like
sin(2x)=2sin(x)cos(x) and sin(x/2)=1/2-1/2 cos2x
My question is are there similar formulas for arcsin and arccos?
I know those only !
arcsin x =ln(ix-sqrt(1-x^2))
arccos x =ln(-ix-sqrt(1-x^2))
I'm working in electrodynamics, and i reached an integral for the kinetic energy and the answer should be mc^2-mc^2, but I'm getting arcsin !
i knew the answer already about the energy, but i don't this i should neglect the problem of the damn inverse function,
Can anyone help and tell me some formulas?
Thanks...
sin(2x)=2sin(x)cos(x) and sin(x/2)=1/2-1/2 cos2x
My question is are there similar formulas for arcsin and arccos?
I know those only !
arcsin x =ln(ix-sqrt(1-x^2))
arccos x =ln(-ix-sqrt(1-x^2))
I'm working in electrodynamics, and i reached an integral for the kinetic energy and the answer should be mc^2-mc^2, but I'm getting arcsin !
i knew the answer already about the energy, but i don't this i should neglect the problem of the damn inverse function,
Can anyone help and tell me some formulas?
Thanks...