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Try CalcES Scientific Calculator Online

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) = 0.894 in radian mode

Sin(90)=1 in Degree mode

Sin(90) = 1 in degree mode

Sin(90)=0.988 in Gradian mode

Sin(90) = 0.988 in gradian mode

How to change angle unit?

Follow these steps to change angle unit:

Open the calculator settings
Choose your angle unit: RAD, DEG or GRAD

Examples

Angle unit = DEGREE

Sin(60)=√(3)/2 ~ 0.866

Angle unit = DEGREE

Angle unit = RAD

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

Sin(4π)=2√2 ~ 0.7

Angle unit = RAD, sin(pi/4)

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 180π.
To convert radians to degrees: Multiply the number of radians by π180.
To convert degrees to gradians: Multiply the number of degrees by 910.
To convert gradians to degrees: Multiply the number of gradians by 109.
To convert radians to gradians: Multiply the number of radians by π200.
To convert gradians to radians: Multiply the number of gradians by 200π.

FAQs

How do you change the angle unit on a calculator?
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