Maths Inside Baseball

SAS congruence.
OC=OC, reflexive
AO=BO, definition of radius
AOC=BOC, reflexive

In trigonometry, we are able to calculate the area of a triangle with the
values of two sides and the angle between them. A proven equation
shows that
A= 21 ·a·b·sinθ
where a and b is the two sides and θis the angle.

Image 3-14: Sin Rules in Area of a Triangle

If we substitute each three values in the correct places we can get the area
of one triangle.
A=^12 · 60. 5 · 95 ·sin 108. 25 ≃ 2729. 2 ft^2

As we proved before, two triangles are equal. It means that this value of
area also applies to the other triangle. Area of two triangles are