Frac pi 4 July 8, 2019 16 32 64 128 Frac 4 pi 3 Frac 4 pi 5 Frac 4 pi 9 Frac 7 pi 4 Theta = frac pi 4 Cos frac pi 4 Frac 2 pi 4 Sin frac pi 4 Frac 13 pi 4 Tan frac pi 4 Frac 7 pi 4 in degrees Frac 17 pi 4 Arctan x frac pi 4