The Standard equation of a Sinusoidal function is Y= A Sin

Where A is the Amplitude, B is the Period , C is the Horizontal shift, D is the vertical shift. The sketch of this graph is shown below.

We have A=6 and D=0

Since Consecutive zeros are and the Period will be twice the distance between these two zeros. That is B=.

The Sine curve is crossing x axis at , the Horizontal shift, that is distance of the point of the first crossing and the origin is C=

The required Equation will be Y=6Sin