How do you solve the inverse trig function $arctan (-sqrt5061)$ ?

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Answer 1 · 2015-05-25T22:23:52

$tan x = sqrt5114$ -> find x ?

$tan x = -sqrt5061 = -71.14$ -->

$x = 89.19$ deg, and $x = (89.19 + 180) = 269.19$

The answer x = 89.19 is rejected because tan x is negative.

How do you solve the inverse trig function arctan (-sqrt5061)arctan (-sqrt5061)?