Double Angle Calculator
Calculate double angle formulas for sine, cosine, and tangent functions.
Result will appear here
Formulas:
sin(2θ) = 2sin(θ)cos(θ)
cos(2θ) = cos²(θ) - sin²(θ)
tan(2θ) = 2tan(θ)/(1 - tan²(θ))
sin(2θ) = 2sin(θ)cos(θ)
cos(2θ) = cos²(θ) - sin²(θ)
tan(2θ) = 2tan(θ)/(1 - tan²(θ))
About Double Angle Formulas
Double angle formulas are essential trigonometric identities that help simplify complex calculations in mathematics, physics, and engineering. They express trigonometric functions of twice an angle (2θ) in terms of functions of the original angle (θ).
Common Applications
- Signal processing and analysis
- Physics wave calculations
- Engineering mechanics
- Computer graphics and game development
Tips for Using the Calculator
- Enter angles in degrees (the calculator will convert to radians internally)
- Results are rounded to 6 decimal places for precision
- Negative angles are supported
- For best results, stay within -360° to 360° range