Use the angle sum or difference identity to find the exact value of tan 75 degrees

I can get this far:
tan 75 = tan(45 + 30)
tan(45+30) = (tan45 + tan 30)/(1 - tan45tan30)
tan(45+30) = (1 + sqrt1/3)/(1-(1)(sqrt1/3))

and after that I'm stuck. I'm so close! Please help?

Question

Use the angle sum or difference identity to find the exact value of tan 75 degrees

I can get this far:
tan 75 = tan(45 + 30)
tan(45+30) = (tan45 + tan 30)/(1 - tan45tan30)
tan(45+30) = (1 + sqrt1/3)/(1-(1)(sqrt1/3))

and after that I'm stuck. I'm so close! Please help?

anonymous · Answer

what grade is this?

anonymous · Answer

I'm a junior in high school and I'm in precalc

anonymous · Answer

so logout of OpenStudy thin copy and paste in the address bar and hit openstudy!

anonymous · Answer

tell me if that helps

anonymous · Answer

I think I got it now. Thank you!