Hi, pleas help me to solv sin2x*cos2x=1/2. Thanks
F fredhrik New member Joined Aug 4, 2009 Messages 2 Aug 4, 2009 #1 Hi, pleas help me to solv sin2x*cos2x=1/2. Thanks
L Loren Senior Member Joined Aug 28, 2007 Messages 1,299 Aug 4, 2009 #2 If you let 2x = a, then you have (sin a)*(cos a) = 1/2 which becomes... 2sin a cos a = 1 Rewrite that as sin 2a = 1, solve for a and then remember that a = 2x. If you need more help, show us your work.
If you let 2x = a, then you have (sin a)*(cos a) = 1/2 which becomes... 2sin a cos a = 1 Rewrite that as sin 2a = 1, solve for a and then remember that a = 2x. If you need more help, show us your work.
