Dubbla vinkeln

The exercise was created 2019-09-12 by Kryss1. Question count: 5.

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Normally, all words in an exercise is used when performing the test and playing the games. You can choose to include only a subset of the words. This setting affects both the regular test, the games, and the printable tests.

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  • sin 2x 2sinxcosx
  • cos2x cos^2x-sin^2x
  • 2cos2x 2cos^2x-1
  • 3cos2x 1-2sin^2x
  • tan2x 2tanx/1-tan^2x

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