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What is the principal coterminal angle of (2210^\circ)?

Answer and explanation

Correct answer: \(50^\circ\)

To obtain the principal coterminal angle, subtract a multiple of \(360^\circ\) so that the result lies between \(0^\circ\) and \(360^\circ\). \(2210^\circ-6\times360^\circ=2210^\circ-2160^\circ=50^\circ\). Hence, \(50^\circ\) is correct. \(40^\circ\) is not coterminal with \(2210^\circ\), since their difference is not an integral multiple of \(360^\circ\). Exam tip: divide the angle by \(360^\circ\) and use the remainder.

Related tags

Trigonometric FunctionsAnglesCoterminal AnglesPrincipal AngleDegree MeasureMathematicsClass 12 Mcq

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