Nov 9, 2025 04:54 PM
Trigonometry studies right triangles and measures angles in either degrees or radians.
We envision the real numbers as laid out on a line. And locate them from left to right on this line. a<b means that a lies to the left of b.
Geometry and algebra are useful tools for describing relationships among static quantities. But for describing change we need a new operation. One that is provided by Calculus, the mathematics of change.
In the spirit of Philosophy, we develop mathematics from observation of the real world. The map IS the territory in this case.
We envision the real numbers as laid out on a line. And locate them from left to right on this line. a<b means that a lies to the left of b.
Geometry and algebra are useful tools for describing relationships among static quantities. But for describing change we need a new operation. One that is provided by Calculus, the mathematics of change.
In the spirit of Philosophy, we develop mathematics from observation of the real world. The map IS the territory in this case.
