Multiple Choice Questions on The value of sin 45 deg theta ndash cos 45 deg ndash theta is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The value of sin 45 deg theta ndash cos 45 deg ndash theta is ........

Quantitative Aptitude ( CCS) Trignometry
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    The value of sin (45° + θ) – cos (45° – θ) is

    1

    Incorrect Answer

    0

    Correct Answer

    2 cos θ

    Incorrect Answer
    2 sin θ
    Incorrect Answer
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    Explanation:

    sin(45° + θ) – cos(45° – θ)
    = sin{90° – (45° – θ)} – cos (45° – θ)
    = cos (45° – θ) – cos (45° – θ)
    {?sin(90 – A) = cos A }
    = 0

    By: Amit Kumar
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