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Class 12 Inverse Trigonometric Functions · Conceptual Answer1 Marksprincipal_values

Class 12 Maths · Inverse Trigonometric Functions · Conceptual Answer #39

Evaluate \(\cos^{-1}[\cos(7\pi/6)]\).

✅ Step-by-Step Solution

Final Answer: 5π/6
  1. cos(7π/6)=cos(5π/6), with 5π/6 in [0,π].
  2. 5π/6

📋 CBSE Stepwise Marking Scheme

  • [0.5 marks] cos(7π/6)=cos(5π/6), with 5π/6 in [0,π].
  • [0.5 marks] 5π/6

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