N nahi11 Member Joined Mar 28, 2011 Messages 131 Gender Male HSC 2012 Aug 12, 2012 #1 Hi, I deleted the previous since I doubt anyone was going to benefit from it. Could someone please what is happening here : Thanks
Hi, I deleted the previous since I doubt anyone was going to benefit from it. Could someone please what is happening here : Thanks
deswa1 Well-Known Member Joined Jul 12, 2011 Messages 2,256 Gender Male HSC 2012 Aug 12, 2012 #2 Do you know the t-substitutions? If you let t=tan(a/2), you'll find that sina=(2t)/(1+t^2) -> Then sub in tan(a/2) for t and the result follows
Do you know the t-substitutions? If you let t=tan(a/2), you'll find that sina=(2t)/(1+t^2) -> Then sub in tan(a/2) for t and the result follows
N nahi11 Member Joined Mar 28, 2011 Messages 131 Gender Male HSC 2012 Aug 12, 2012 #3 oh lol thanks. I forgot.
