Trigonometry

• sin(0) = 0

  cos(0) = 1

  tan(0) = 0
• sin(pi/6) = 1/2

  cos(pi/6) = sqrt(3)/2

  tan(pi/6) = sqrt(3)/3
• sin(pi/4) = sqrt(2)/2

  cos(pi/4) = sqrt(2)/2

  tan(pi/4) = 1
• sin(pi/3) = sqrt(3)/2

  cos(pi/3) = 1/2

  tan(pi/3) = sqrt(3)
• sin(pi/2) = 1

  cos(pi/2) = 0

  tan(pi/2) = undefined