CASIO

To change the default angle unit (degrees, radians, grads), press the key a number of times until you reach the angle unit setup screen shown below.

Press the number key (, , or ) that corresponds to the angle unit you want to use.
(90° = π/2 radians = 100 grads)

Example 1: sin 30° = 0.5 (Angle unit: Deg)

• ･････(Deg)

  30
• 0.5

Example 2: cos(^π₃) = 0.5 (Angle unit: Rad)

• ･････(Rad)

  (π)3
• 0.5

Example 3: tan(-35) = -0.612800788 (Angle unit: Gra)

• ･････(Gra)

  35
• -0.612800788

Example 1: sin-1 0.5 = 30° (Angle unit: Deg)

• ･････(Deg)

  (sin-1) 05
• 30.

Example 2: cos-1 ^√2₂ = 0.25π (= ^π₄) (Angle unit: Rad)

• ･････(Rad)

  (cos-1)22
  (π)
• 0.25

Example 3: tan-1 0.741 = 36.53844577° (Angle unit: Deg)

• ･････(Deg)

  (tan-1) 0741
• 36.53844577