4 public questions tagged with this topic.
Simply put, after simplifying, sin-¹x is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XI — Sets, Relations and Functions
In easy words, complete solution: write formula, plug data, do arithmetic. Final value matches cos-¹ √1 - x². Simple and accurate.
Ref: NCERT Mathematics Class XI — Trigonometry
Understanding this is easy: complete solution: write formula, plug data, do arithmetic. Final value matches 2π/3. Simple and accurate.
Ref: NCERT Mathematics Class XI — Trigonometry
Recall the rule using formula we get 1. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get 1.
Ref: NCERT Mathematics Class XI — Trigonometry
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