Multiple Choice Questions on radic 1 sin A minus sin A 2 cos A 2 is true if ........ for NDA Exam Preparation

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Multiple Choice Questions

radic 1 sin A minus sin A 2 cos A 2 is true if ........

Mathematics (NDA) Trigonometry
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    . √1 +sin A = −(sin A / 2 + cos A / 2 ) is true if-

    . 3π / 2 < A < 5π / 2 only

    Incorrect Answer

    π / 2 < A < 3π / 2 only

    Incorrect Answer

    3π / 2 < A < 7π / 2

    Correct Answer

    . 0 < A < 3π / 2

    Incorrect Answer
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    Explanation:

    3π / 4 < A > 5π  / 4

    ⇒ 3π / 2 < A / 2 < 5π / 2

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