Question

Explain the meaning of y=cos^-1x

Answer 1

Answer with explanation:

The given Trigonometric function is:

    $y=cos^{-1}x$

You can write it as also:→ x= cos y

1.It is the inverse of Cosine function.

2. The Domain and range of this Real valued function is

Domain=Set of values taken by ,x for which y is defined.→x=[-1,1]

Range =Set of values taken by , y for which x is defined.→y=[0, π]

3. It decreases from 0 to π then increases from π to 2π.

         

Answer 2

This function is the inverse cosine of x. The x is the trig value and the y is the angle in radians