
PF Contest  Win "Conquering the Physics GRE" book! Click Here to EnterDismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!
How is sinx/(2sin(x/2)) = cos(x/2)?
Loading...
Similar Threads  sinx 2sin  Date 

How to go from a*cosx + b*sinx TO A*cos(wt  phi)?  Mar 10, 2016 
Find real solutions to an equation  Nov 23, 2015 
Generel Solution of sinx+cos^2 x= 1  Nov 8, 2014 
Trig ((tanx  sinx)/sin^3x) = (1/(cosx  cos^2x))  Apr 10, 2014 
Prove identity sin4x=(4sinxcosx)(12sin^2x)  May 30, 2012 