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Geometry

Fundamental Trigonometric Identities

Trigonometric Periodicity Identities

         

Which of the following is equal to \(3\cos(11\pi+x)?\)

Which of the following is equal to \(2\tan\left(x-\frac{5}{2}\pi\right)?\)

Which of the following is equal to \[\sin^2(5\pi+x)+\cos^2(-4\pi-x)+\tan^2\left(\frac{5}{2}\pi+x\right)\] for a random \(x?\)

Find the value of \(\sin\left(-\frac{5}{3}\pi\right)+\cos\left(\frac{59}{6}\pi\right)+\tan\left(\frac{31}{3}\pi\right).\)

Which of the following is equal to \(\sin\left(\frac{39}{2}\pi+3x\right)?\)

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