CALCULATOR
Cosine of Twice an Angle Calculator
Cosine of Twice an Angle. Example: Angle in degrees: 30 degrees gives 0.5 number. Dimensionless trig result; supplied angle in degrees; no equation solving. Only this original stated job is proposed, not full historical source coverage. Input domains and output unit must be visible.
Dimensionless trig result; supplied angle in degrees; no equation solving. Only this original stated job is proposed, not full historical source coverage. Input domains and output unit must be visible. Derivation: Convert twice the supplied degree angle to radians.
Accepted inputs: Angle in degrees: -180 to 180 degrees.
How the calculation works
cos(2θ)
Worked example
With angle in degrees 30 degrees, cosine of twice an angle is 0.5 number.
Assumptions and limits
Dimensionless trig result; supplied angle in degrees; no equation solving. Only this original stated job is proposed, not full historical source coverage. Input domains and output unit must be visible. Derivation: Convert twice the supplied degree angle to radians.