posted by Natash .
Use an addition or subtraction formula to write the expression as a trigonometric function of one number:
tan75degrees-tan15degrees/1+tan75tan15=tanAdegrees =square root B
Its asking for the value of A and B. I know A =60 degrees, what I can't figure out is B, I don't understand what its asking for
draw a right triangle, 2,1, sqrt3
What is the tan of 60 deg?