Show that the curve y = 2 sin x - cos x is sinusoidal.
by writing it in an equivalent form y = asin(x- p).
![Show that the curve y 2 sin x cos x is sinusoidal by writing it in an equivalent form y asinx p class=](https://us-static.z-dn.net/files/ddf/638d94d7817c6f8a3a99627e8ea7ea09.png)