Question

How do you use a calculator to approximate `arctan 0.92`?

Answer 1

`42^@61, 222^@61`

Explanation:

Use calculator:
tan x = 0.92 --> arc `x = 42^@61`
Trig unit circle give another arc x that has the same tan value:
`x = 42^@61 + 180^@ = 222^@61`