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Question 86Asked in BPSC TRE 3.0 (2024) Mathematics Class 9-10

If cos 50º = 0.6428, then the value of sin 40º isअगर cos 50º = 0.6428 है, तो sin 40º का मान है

अगर cos 50º = 0.6428 है, तो sin 40º का मान है
  1. A11
  2. B00
  3. C0.64280.6428
  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) 0.64280.6428

Explanation

sin 40º = cos(90º − 40º) = cos 50º = 0.6428.sin 40º = cos(90º − 40º) = cos 50º = 0.6428।

From BPSC TRE 3.0 (2024) Mathematics Class 9-10 — Previous Year Paper

This is question 86 of BPSC TRE 3.0 (2024) 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.