Class 12 Inverse Trigonometric Functions · Mcq Single Correct1 Marksprincipal_values
Class 12 Maths · Inverse Trigonometric Functions · Mcq Single Correct #9
Evaluate \(\sin^{-1}[\cos(33\pi/5)]\).
✅ Step-by-Step Solution
Final Answer: Option (D): \(-\pi/10\)
- Reduce 33π/5 modulo 2π to 3π/5. Its cosine equals sin(−π/10), whose principal arcsine is −π/10.
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