If Square root a-b/a+b=tanAtanB;show that axa-bxb=(a-bCos2A)(a-bCos2B)
D dr brijesh kumar New member Joined Jun 16, 2012 Messages 1 Jun 16, 2012 #1 If Square root a-b/a+b=tanAtanB;show that axa-bxb=(a-bCos2A)(a-bCos2B)
mmm4444bot Super Moderator Joined Oct 6, 2005 Messages 10,902 Jun 18, 2012 #2 What have you tried thus far? I would square both sides of the first equation, to begin. Also, the difference-of-squares a^2 - b^2 is factorable.
What have you tried thus far? I would square both sides of the first equation, to begin. Also, the difference-of-squares a^2 - b^2 is factorable.