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Which angle has (275^\circ) as its principal angle between (0^\circ) and (360^\circ)?

Answer and explanation

Correct answer: \(635^\circ\)

To find a principal angle, subtract multiples of \(360^\circ\) from the given angle. Since \(635^\circ-360^\circ=275^\circ\), the principal angle of \(635^\circ\) is \(275^\circ\). In contrast, \(725^\circ-720^\circ=5^\circ\), so it is not correct. Exam tip: Coterminal angles differ by an integral multiple of \(360^\circ\).

Related tags

Trigonometric FunctionsAnglesPrincipal AngleCoterminal AnglesDegree MeasureMathematicsClass 12 Mcq

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