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Class 12 Inverse Trigonometric Functions · Conceptual Answer1 Marksprincipal_values

Class 12 Maths · Inverse Trigonometric Functions · Conceptual Answer #36

Evaluate \(\tan^{-1}1+\cos^{-1}(-1/2)\).

✅ Step-by-Step Solution

Final Answer: 11π/12
  1. The principal angles are π/4 and 2π/3; their sum is (3+8)π/12.
  2. 11π/12

📋 CBSE Stepwise Marking Scheme

  • [0.5 marks] The principal angles are π/4 and 2π/3; their sum is (3+8)π/12.
  • [0.5 marks] 11π/12

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