L lola33 New member Apr 28, 2010 #1 Find the exact value of sin(x + y) if sin x = 1/3, cos y = - 3/4, and x is in QII, and y is in QIII. (Hint: sin(x + y) = sin x cos y + cos x sin y ) Can anyone help? Thanks in advance!
Find the exact value of sin(x + y) if sin x = 1/3, cos y = - 3/4, and x is in QII, and y is in QIII. (Hint: sin(x + y) = sin x cos y + cos x sin y ) Can anyone help? Thanks in advance!
