Write the function that represents the sequence in the table

Using d, e, and f as values on a triangle and d being 60 degrees, what is the value of e and f if d is 60 degrees? also, what do you notice about the values of e and f?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

If a || b and e || f , what if the value of y ?