Question

Attachment below

Answer 1

LOL

Answer 2

?

Answer 3

tan(x) = 10/14
then take arc(tan) to get x.
and the calculator

Answer 4

I'm getting 5/7.. this doesn't seem right

Answer 5

that means you have to convert it to degrees. in your calculator you will use the one with ^-1

Answer 6

that was the arc(tan) that @RadEn indicated

Answer 7

this will give you both
http://www.wolframalpha.com/input/?i=arctan%285%2F7%29