Match each inverse function to its domain
Exercise and reference answers
- Matching pairs
- Left
- sin⁻¹ x
- Right
- [−1, 1]
- Left
- cos⁻¹ x
- Right
- [−1, 1]
- Left
- cosec⁻¹ x
- Right
- R − (−1, 1)
- Left
- sec⁻¹ x
- Right
- R − (−1, 1)
- Left
- tan⁻¹ x
- Right
- R
- Left
- cot⁻¹ x
- Right
- R
Explanation
Domains split three ways: [−1, 1] for sin⁻¹ and cos⁻¹, R − (−1, 1) for cosec⁻¹ and sec⁻¹, and all of R for tan⁻¹ and cot⁻¹. Source: syllabus Maths Part I, Ch 2 Inverse Trigonometric Functions.
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