Question

what is the value of cos3270° in radian?​

Answer 1

The measure of an angle is determined by the amount of rotation from the initial side to the terminal side. In radians, one complete counterclockwise revolution is 2π and in degrees, one complete counterclockwise revolution is 360° . So, degree measure and radian measure are related by the equations

360°=2π radians

and

180°=π radians

From the latter, we obtain the equation 1°=π180 radians . This leads us to the rule to convert degree measure to radian measure. To convert from degrees to radians, multiply the degrees by π180° radians .

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