An angle converter converts between degrees, radians, gradians, and turns. Degrees (0–360) are used in everyday life. Radians (0–2π) are the mathematical standard. Gradians divide a right angle into 100 units.
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Pro Tip
Mental conversion: 1 radian ≈ 57.3°. So π/4 rad = 45° (half of 90°), π/3 rad = 60°.
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Did You Know?
Radians were introduced to mathematics in the 1700s and are preferred in calculus because they make derivatives of sin and cos much simpler — no conversion factors needed.
References
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