2+1/3tan(theta)=2

I know that tan=0
0,180

But i don't know how to figure it out. Please help.

the way you typed it:

2+1/3tan(theta)=2
1/3tanØ = 0
tanØ = 0
then Ø = 0, 180°, 360°, ...
since the period of tanØ = 180°, you can obtain a new answer by simply adding or subtracting multiples of 180° to any answer.

did you mean 2 + 1/(3tanØ) = 2 ??