Arcs and Sectors
length of arc=angle/360xpixd
Area of Sector=angle/360xpixd
Angle/360=length of arc/ circumference=Area of the sector / area of full circle
Every Angle from the points in a semicircle is 90 degrees.
A Tangent to a circle is a straight line which touches the circle at only one point.
The angle between a tangent…