Question

How do you use a calculator to evaluate `tan^-1 (12)` in both radians and degree?

Answer 1

`0.47pi`
`85^@24`

Explanation:

Use calculator:
tan x = 12 --> `x = 85^@24`
Convert x to radians:
`180^@ --> pi`
`1^@ --> pi/180`
`85^@24 --> ((85.24)pi)/180 = 0.47pi`