Question 136Asked in BPSC TRE 2.0 (2023) Mathematics Class 9-10

If 0° ≤ A, B ≤ 90° such that sin A = 1/2 and cos B = 1/2, then A + B is equal toयदि 0° ≤ A, B ≤ 90° ऐसे हैं कि sin A = 1/2 और cos B = 1/2, तो A + B बराबर है

यदि 0° ≤ A, B ≤ 90° ऐसे हैं कि sin A = 1/2 और cos B = 1/2, तो A + B बराबर है
  1. A0°0°
  2. B60°60°
  3. C90°90°
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (C) 90°90°

Explanation

sin A = 1/2 gives A = 30° and cos B = 1/2 gives B = 60°, so A + B = 90°.sin A = 1/2 से A = 30° और cos B = 1/2 से B = 60°, अतः A + B = 90°।

From BPSC TRE 2.0 (2023) Mathematics Class 9-10 — Previous Year Paper

This is question 136 of BPSC TRE 2.0 (2023) Mathematics Class 9-10 — 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.