how can i express (1+i)/(sqrt(3)+i) in the x+iy form? Also, using those two smaller expressions, i must show that cos(pi/12) = (sqrt(3)+1)/(2sqrt(2)) and sin(pi/12) = (sqrt(3)-1)/(2sqrt(2))

another one, i must show that if w is an nth root of unity, thenw= 1/w. deduce that(1-w)^n= (w-1)^n. (showing that (1-w)^2n is real)

the underscores go above the numbers, to show the conjugate