Working with the graphs of trigonometric functions Working with trigonometric relationships in degrees Calculating the area of a triangle using trigonometry Using ...

Many students think they've solved a trig equation when they get one answer (one size of angle \(x^\circ\)). However there's often more than one answer expected so be aware of this. Let's remind ...

This paper is concerned with two cosine-function-related functions which are called cosine step response and cosine cumulative output. We study some of their properties, such as measurability, ...