In circuits with multiple sources. This allows you to analyze the effects of each source separately, which often simplifies the math.
Yes, the corollary to one theorem can be used to prove another theorem.
Millman's theorem
pythagoreans theorem was used to help build the pyramids
Pythagoras' theorem can be used for right-angled triangles. Using the theorem, you are able to calculate what the length of one side of a triangle is.
Pick's Theorem is a theorem that is used to find the area of polygons that have vertices that are points on a lattice. George Pick created Pick's Theorem.
Both Thévenin's theorem and Norton's theorem are used to simplify circuits, for circuit analysis.
The Greek, Babylonian, Indian, and Chines knew and used the Pythagorean Theorem.
Millman's theorem
sampling theorem is used to know about sample signal.
Pythagorean theorem
Any rational number can be used in the remainder theorem: 4 does not have a special role.
Pythagorean theorem