Question

Solve for x. (Round the answer to 3 decimal places)

arctan(2x − 8) = -1

Answer 1

i think this is a calculator exercise

Answer 2

\[2x-8=\tan(-1)\\
x=\frac{\tan(-1)+8}{2}\]

Answer 3

Ah, I didn't think of that. Haha. I did get x = 3.22 , though

Answer 4

3.221

Answer 5

that is not what i got

Answer 6

http://www.wolframalpha.com/input/?i=%28arctan%28-1%29%2B8%29%2F2

Answer 7

http://www.wolframalpha.com/input/?i=%28tan+%28-1%29%2B8%29%2F2