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What is \(\tan(2\pi-x)\) equal to?

Answer and explanation

Correct answer: \(-\tan x\)

The angles \(2\pi-x\) and \(-x\) are coterminal because they differ by \(2\pi\). Hence, \(\tan(2\pi-x)=\tan(-x)\). Since tangent is an odd function, \(\tan(-x)=-\tan x\). The \(\cot x\) option is incorrect because tangent changes to cotangent for complementary angles, not for this angle. Exam tip: First reduce \(2\pi-x\) to \(-x\).

Related tags

Trigonometric FunctionsAllied AnglesTangentOdd FunctionsPeriodicityTrigonometric Functions And Their PropertiesMathematicsClass 12 Mcq

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