5.1 Vector Norms
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is known as the triangle inequality. In higher-dimensional spaces we do not
have the luxury of visualizing the geometry with our eyes, and the question of
whether or not the triangle inequality remains valid has no obvious answer. The
The unit circle X2 +Y2= 1 Definition of trigonometric functions sin t = y cos t = x tan t= y/x csc t = 1/y sec t = 1/x cot t = x/y
Special Values of Trigonometric Functions
Angle Degrees 0 30 45 60 90 120 135 150 180 210 225 240 270 300 315 330 360
Radian
Cosecant, Secant, and Cotangent
In this chapter well introduced three more trigonometric functions: the
cosecant, the secant, and the cotangent. These functions are written as csc(),
sec(), and cot() respectively. They are the functions defined by the for