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.

Question

asked Jan 18, 2020 165k views

2 Answers

Vasilii Suricov · Answer 1 · 2020-01-23T16:29:18+0000

Answer:

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