Area of an arbitrary triangle
The area of an arbitrary triangle can be calculated from the two sides of the triangle and the included angle.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or
Area of the spherical zone
Spherical zone is the surface of the solid defined by cutting a sphere with a pair of parallel planes excluding the top and bottom bases. The area can be
Area of a Cylinder
A cylinder is a geometric shape, that its surface is forming by the points at a fixed distance from a given line segment, the axis of the cylinder. The