B Becky New member Mar 9, 2011 #1 Hey can anyone help me with these? I have to find the exact value of 1) sin (7 pi/8) 2) 1- 2sin^2 75 degrees 3) cos15cos105-sin15sin105 please help! If you can only do one or two that's fine, I just really need the help. Thank you
Hey can anyone help me with these? I have to find the exact value of 1) sin (7 pi/8) 2) 1- 2sin^2 75 degrees 3) cos15cos105-sin15sin105 please help! If you can only do one or two that's fine, I just really need the help. Thank you
