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

1 answer

draw a right triangle, 2,1, sqrt3

What is the tan of 60 deg?