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Angles Assignment Help

Angles

Angle is the measure of rotation formed between two rays. In trigonometry, angles play a huge role in determining the appropriate trigonometric function values. One complete rotation gives an angle of 360°. Depending on the direction of rotation, angles can be positive or negative!

Units of Angle: Angle is either measured in degrees or in radians.         

Radian: It is the standard unit to measure an angle and is numerically equal to the length of its respective arc of a unit circle.

Conversion of degree to radian: There is a simple relationship between degrees and radians.

Π radians = 180°

So 1radian=180°/Π (OR) 1degree=π/180°

Example: Convert 120° to radian.

120°* (π /180°) = 2π/3 radian

Example: Convert π/6 radian to degrees.

Π * 180° = 30°

  6        π

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