Geometry

Fundamental Trigonometric Identities

Trigonometric Periodicity Identities

         

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

Which of the following is equal to 2tan(x52π)?2\tan\left(x-\frac{5}{2}\pi\right)?

Which of the following is equal to sin2(5π+x)+cos2(4πx)+tan2(52π+x)\sin^2(5\pi+x)+\cos^2(-4\pi-x)+\tan^2\left(\frac{5}{2}\pi+x\right) for a random x?x?

Find the value of sin(53π)+cos(596π)+tan(313π).\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(392π+3x)?\sin\left(\frac{39}{2}\pi+3x\right)?

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