Question

How do you evaluate `\cot ^ { - 1} ( - 0.031)`?

Answer 1

`- 88^@24`

Explanation:

Find arccot (-0.031)
cot x = - 0.031 -->`tan x = 1/(cot x) = 1/(-0.031) - 32.26`
Calculator gives -->

`arc cot (-0.031) = arctan (-32.26) = - 88^@24`