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
Let’s jump into a video to understand this better!