Question

tan^-1(tan(7))=7 or not

Answer 1

By Checking its domain too ..

Answer 2

What other info are you given?

Answer 3

only this which i have given

Answer 4

Ok so the best I can do is have you go to
http://web2.0calc.com/
enter in this order
Hold the "tan" buton down till it says "atan" then push the "tan" button again and enter 7 then hit the equal button you should have your answer!

Answer 5

thankyou

Answer 6

Yup(:

Answer 7

no, arctan(x) only gives you a value between -pi/2 and pi/2.

7 is not in that range

Answer 8

7 could be in degrees, and here it must be

this is the arc tangent (inverse tangent) of the angle having the tangent of angle 7,

arc tan[tan x] = x