Question

Use the circle unit to evaluate tan(13/4)

Answer 1

Given

`\tan ((3\pi)/(4))`

In radian

`\pi=180^o`

Substitute the value into the given expression

`\tan ((13\pi)/(4))=\tan ((13(180))/(4))`

Simplify the expression

`\tan ((13(180))/(4))=\tan (585)`

By using calculator

`\tan (585)=1`

Therefore the answer is

`\tan ((13\pi)/(4))=1`