Question

Select all that apply.

Select the functions whose value is undefined.

sin 180°
cos 270°
csc 360°
tan 90°
cot 90°
sec 270°

Answer 1

csc 360°

tan 90°

cot 90°

sec 270°

Explanation:

Hope this helps

Answer 2

Values provided below

`\\ \tt\longmapsto sin180=0`

`\\ \tt\longmapsto cos270=cos90=0`

`\\ \tt\longmapsto csc360=1/0=\infty`

`\\ \tt\longmapsto tan90=\infty`

`\\ \tt\longmapsto cot90=0`

`\\ \tt\longmapsto sec270=\infty`

Note the rule

• Sin and cos is never undefined for any value