Question 92Asked in BPSC TRE 1.0 (2023) Mathematics Class 11-12

The value of tan⁻¹√((1 + sin x)/(1 − sin x)) istan⁻¹√((1 + sin x)/(1 − sin x)) का मान है

tan⁻¹√((1 + sin x)/(1 − sin x)) का मान है
  1. Ax/2x/2
  2. Bπ/4 − x/2π/4 − x/2
  3. Cπ/4 + x/2π/4 + x/2
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
Show answerHide answer

Correct answer: (C) π/4 + x/2π/4 + x/2

Explanation

Write 1 ± sin x = (cos(x/2) ± sin(x/2))². The ratio under the root becomes [(1 + tan(x/2))/(1 − tan(x/2))]² = tan²(π/4 + x/2). So the value is π/4 + x/2 (for −π/2 < x < π/2).1 ± sin x = (cos(x/2) ± sin(x/2))² लिखें। मूल के अन्दर का अनुपात [(1 + tan(x/2))/(1 − tan(x/2))]² = tan²(π/4 + x/2) हो जाता है। अतः मान π/4 + x/2 है (−π/2 < x < π/2 के लिए)।

From BPSC TRE 1.0 (2023) Mathematics Class 11-12 — Previous Year Paper

This is question 92 of BPSC TRE 1.0 (2023) Mathematics Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.