what does c =if 3=1/4sec0+c
3 = (1/4)sec(0)+c note......sec(0) = 1 ........so we have
3 = (1/4) (1) + c
3 = (1/4) + c subtract (1/4) from each side
[3 - 1/4 ] = c = [ 2 + 3/4 ] = 2.75
