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Mathematik-Online problems:

Problem 904: Trigonometric Identities

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Using trigonometric identities, prove the following statements:
(a)
$ \sin\left(\frac{\pi}{3}\right) = \sin\left(\frac{2\pi}{3}\right)$.
(b)
$ f(x)=\cos(x)$ is an even function.
(Author: Rafee )

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[Solutions]
  automatisch erstellt am 14. 10. 2004