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In which direction is a positive angle usually measured?

Answer and explanation

Correct answer: Anticlockwise direction

A positive angle is conventionally measured from the positive x-axis in the anticlockwise direction. This convention is used in trigonometry and coordinate geometry. Moving anticlockwise corresponds to increasing the angle measure, while moving clockwise corresponds to a negative angle when no other convention is specified.

For example, starting at the positive x-axis, a quarter turn anticlockwise is \\(90^\circ\\), a half turn is \\(180^\circ\\), and a full turn is \\(360^\circ\\). These standard measurements show why the positive direction is anticlockwise. Therefore option A is correct. The other choices describe vertical movement or the opposite rotational direction, not the usual angular convention.

Related tags

Trigonometric-FunctionsAnglesPositive-Angle

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