Trigonometric functions is one of the basic Elementary function, which takes the angle (the most commonly used radian system in mathematics, the same below) as the independent variable, and the ...

The Concepts Through Functions Series introduces functions at the start of each text, and maintains a continuous theme by introducing/developing a new function in ...

In high school, you probably learned that trigonometric functions – like sine, cosine and tangent –can be derived, geometrically, from a circle (hence why trig functions are also known as “circular” ...