M munkaii Member Joined Jul 8, 2004 Messages 99 Gender Male HSC 2006 Mar 19, 2005 #1 CAn someone prove these for me? (sin 5A)^2 - (sin3A)^2 = sin8Asin2A (1+sin2A)/(1-sin2A)= tan^2 (45+A) tan3x-tanx=2sinx/cos3x For the sake of the world i cant prove them
CAn someone prove these for me? (sin 5A)^2 - (sin3A)^2 = sin8Asin2A (1+sin2A)/(1-sin2A)= tan^2 (45+A) tan3x-tanx=2sinx/cos3x For the sake of the world i cant prove them
M maths > english Rejected Member Joined Feb 19, 2004 Messages 85 Gender Undisclosed HSC 2004 Mar 19, 2005 #2 Solution to the first one attached
M maths > english Rejected Member Joined Feb 19, 2004 Messages 85 Gender Undisclosed HSC 2004 Mar 19, 2005 #3 Solution to 2 attached
M maths > english Rejected Member Joined Feb 19, 2004 Messages 85 Gender Undisclosed HSC 2004 Mar 19, 2005 #4 Solution to 3 attached
