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Class 12 Inverse Trigonometric Functions · Conceptual Answer1 Marksprincipal_values

Class 12 Maths · Inverse Trigonometric Functions · Conceptual Answer #41

Evaluate \(\sin^{-1}[\sin(4\pi/5)]\).

✅ Step-by-Step Solution

Final Answer: π/5
  1. sin(4π/5)=sin(π−4π/5)=sin(π/5), and π/5 lies in the principal interval.
  2. π/5

📋 CBSE Stepwise Marking Scheme

  • [0.5 marks] sin(4π/5)=sin(π−4π/5)=sin(π/5), and π/5 lies in the principal interval.
  • [0.5 marks] π/5

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