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    Question

    src="https://www.ixambee.com/questionimage/Chapter/1645684506-5.png" alt="" />
    A 1 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    => 5 sin2╞Я + 14 cos┬а╞Я = 13 => 5(1 -┬а cos2╞Я) +┬а 14┬а cos┬а╞Я = 13 => 5 - 5 cos2╞Я┬а +┬а 14┬а cos┬а╞Я = 13 =>┬а 5 cos2╞Я┬а -┬а 14┬а cos┬а╞Я + 8 = 0 => (sec ╞Я + cot ╞Я)/(cosec ╞Я + tan ╞Я) => [5/4 + 4/3]/ [5/3 + 3/4] => 31/29

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