Topography notes: Table of contents We consider a plane cartesian coordinate system, a circumference with radius r = 1 (this is most important!) and P point into that circumference. Now we consider M =(0,1), the upper intersection between the circumference and Y-axis. Also we consider N=(1,0), the intersection on the right between the circumference and X-axis. ..
Trigonometric functions are refer to an angle and they are divisions of a segment with another one. Therefore the value of a trigonometric function is a real number. We consider a plane cartesian coordinate system, a circumference with radius r, a P point into that circumference and a right triangle (OPP”). Sine Cosine Tangent Cotangent ..