The angle x lies in the interval pi/2 lessthanequal x lessthanequal pi, and sin^2 x = 8/9. Determine the value of sin 3x
Follow Math Help Forum on Facebook and Google+
Originally Posted by Devi09 The angle x lies in the interval pi/2 lessthanequal x lessthanequal pi, and sin^2 x = 8/9. Determine the value of sin 3x Note that sin(3x) = sin(2x + x) = sin(2x) cos(x) + sin(x) cos(2x) What are sin(2x) and cos(2x)? -Dan
View Tag Cloud