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Inverse Trigonometric Proofs

This is part of the Prelim Maths Extension 1 Syllabus from the topic Trigonometric Functions: Inverse Trigonometric Functions. In this post, we will explore inverse trig proofs. Inverse trigonometric proofs are the following:

  •  <span style="font-weight: 400;">sin^−1 (−) = −sin^−1 x</span>
  • cos^−1 (−x) = \pi − cos^−1 x,
  • tan^−1 (−x) = −tan^−1 x and
  • cos^−1x +sin^−1x  = \pi / 2


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