Thread: trigonometric functions

Can someone help me to solve a trigonometric function.To review this function in points

y=3sin(2x+π/4)

1. 
   

(smile)

FOR THI USE EXPANSION PROPERTY OF SIN THAT IS

3sin(2x+4)=3(sin2xcos45+cos2xsin45)
also here you can graph the function
amplitude of the function has increased to 3 and the phase difference is 45 degrees