Question

How many possible values for y are there where y = Cos-lo? O A. O Ο. O B. Infinite O C. 1 O D. 2

Answer 1

B. Infinite

Explanation:

Given that:

`y=\cos ^(-1)(0)`

This implies that:

`\cos (y)=0`

From the graph of f(x)=cos(x), we observe that:

`\cos (x)=0\text{ for }x=(\pi)/(2)+k\pi\text{ for any }k\in\Z,\text{ }\Z\text{ being the set of integers}`

Therefore, there are infinitely possible values of y.