Angle WVX = Angle YVZ (vertically opposite angles)
Angle VWX = Angle VYZ (shown)
Angle WXV = Angle YZV (total sum of angles in triangle)
Answer:
the first one since it shows all the lines being equal and therefore making the angles equal
The triangle angle sum theorem states that the 3 angles in the triangle must equal 180 degrees.
The derivative is -6sin(3x)
