Angle Units

The CalcES Scientific Calculator supports 3 angle units:

• Degree (DEG)
• Radian (RAD)
• Gradian (GRAD)

If the Sin(90) on your calculator is not evaluating to 1, please ensure that your calculator angle unit is set to degrees, not radians.

• Sin(90) = 0.894 in Radian mode

• Sin(90) = 1 in Degree mode

• Sin(90) = 0.988 in Gradian mode

Follow these steps to change angle unit:

1. Open the calculator settings

2. Choose your angle unit: RAD, DEG or GRAD

Examples

1. Angle unit = DEGREE

Sin(60) = Sqrt(3)/2 ~ 0.866

2. Angle unit = RAD

Sin(Pi/4) = Sqrt(2)/2 ~ 0.7

Faster way to switch between DEG/RAD/GRAD units

Formulas

These angle units can be converted into one another using conversion formulas:

• To convert degrees to radians: Multiply the number of degrees by π/180.
• To convert radians to degrees: Multiply the number of radians by 180/π.
• To convert degrees to gradians: Multiply the number of degrees by 10/9.
• To convert gradians to degrees: Multiply the number of gradians by 9/10.
• To convert radians to gradians: Multiply the number of radians by 200/π.
• To convert gradians to radians: Multiply the number of gradians by π/200.

FAQs

• How do you change the angle unit on a calculator?
• How do you change a scientific calculator to degrees?
• How do you change from degrees to radians on a CalcES?
• How do you change a CalcES calculator from degrees to decimals?
• What is angle unit in calculator?
• How do you convert angles to radians on a calculator?
• How to convert degree to radian in CalcES scientific calculator?
• Should my calculator be in radians or degrees?