Question

Suppose Ø is an angle in standard position with cos Ø>0. In which quadrant(s) could the terminal side of Ø lie? Select all that apply.

Answer 1

I think the answer is
I and IV quadrant

Answer 2

I and IV quadrant

Explanation:

we know that

In the I quadrant

the value of
`cos(\phi)` is positive

the value of
`sin(\phi)` is positive

In the II quadrant

the value of
`cos(\phi)` is negative

the value of
`sin(\phi)` is positive

In the III quadrant

the value of
`cos(\phi)` is negative

the value of
`sin(\phi)` is negative

In the IV quadrant

the value of
`cos(\phi)` is positive

the value of
`sin(\phi)` is negative

therefore

the answer is

I and IV quadrant