• Basic Trigonometric Equations: sinx = sinα, cosx = cosα, tanx = tanα, sin2x = sin2α, cos2x = cos2α, tan2x = tan2α
  • Special Cases: sinx = 0, sinx = 1, sinx = -1, cosx = 0, cosx = 1, cosx = -1, tanx = 0, cotx = 0