To determine the value of tangent of 7 times pi over 12, which identity could be used?

the quantity 1 plus cosine of 7 times pi over 6 end quantity over sine of 7 times pi over 6

sine of 7 times pi over 6 over the quantity 1 plus cosine of 7 times pi over 6 end quantity

radical of the quantity 1 minus cosine of 7 times pi over 6 over the quantity 1 plus cosine of 7 times pi over 6 end quantity

I only
II and III only
I and III only
I, II, and III