trig question

May 2010
1
0
I need help if any one has suggestions

y=sin (3x+ pi/2)
 
Feb 2010
1,036
386
Dirty South
I need help if any one has suggestions

y=sin (3x+ pi/2)
What exactly does your question ask??

All I can tell is:

\(\displaystyle sin(A+B) = sinA.cosB + cosA.sinB\)

so if you substitute \(\displaystyle A=3x\) and \(\displaystyle B= \frac{\pi}{2}\),

you have \(\displaystyle y=cos(3x)\)