Using your calculator, find a solution for in RADIANS (if possible). If no solution exists, enter NONE.

Though many solutions may exist, you should only provide ONE answer (which comes from using the inverse trigonometric function keys on your calculator).

I got what I believe to be the answer but I am being told its wrong

so i take $\tan (\theta-4)=0.25 \rightarrow \tan^-1( \tan (\theta-4)=\tan^-1(0.25)\rightarrow \theta-4=\tan^-1(0.25) \rightarrow \theta=18.03624347$

Are my calculation correct?

Originally Posted by M670
Using your calculator, find a solution for in RADIANS (if possible). If no solution exists, enter NONE.
so i take $\tan (\theta-4)=0.25 \rightarrow \tan^-1( \tan (\theta-4)=\tan^-1(0.25)\rightarrow \theta-4=\tan^-1(0.25) \rightarrow \theta=18.03624347$
Are my calculation correct?
NO

$\arctan(0.25)=0.24498$

Originally Posted by Plato
NO

$\arctan(0.25)=0.24498$
When I calculate $\arctan(0.25)=14.036243468$

When I calculate $\arctan(0.25)=14.036243468$
ahh ha now it works ... $\theta = 4.2448$