Question

What is `tan(45)`, `sin(45)` and `cos(45)`?

Answer 1

`tan(45^@)=1`
`sin(45^@)=sqrt2/2`
`cos(45^@)=sqrt2/2`

Explanation:

`45^@` is a special angle, along with `30^@`, `60^@`, `90^@`, `180^@`, `270^@`, `360^@`.

`tan(45^@)=1`
`sin(45^@)=sqrt2/2`
`cos(45^@)=sqrt2/2`

Here are some other special angles :)