I need to calculate the function value of:
sin(2x + pi/4)
I know that:
sin(x) = 1/sqrt(6)
cos(x) = sqrt(5/6)
sin(2x) = 2sin(x)*cos(x)
sin(x + y) = sin(x)*cos(y) + cos(x)*sin(y) : But since there is sin(2x + pi/4) i dont know how to go further. Any help? Thanks. Btw, i need to calculate this without calculator.
sin(2x + pi/4)
I know that:
sin(x) = 1/sqrt(6)
cos(x) = sqrt(5/6)
sin(2x) = 2sin(x)*cos(x)
sin(x + y) = sin(x)*cos(y) + cos(x)*sin(y) : But since there is sin(2x + pi/4) i dont know how to go further. Any help? Thanks. Btw, i need to calculate this without calculator.