Multiple Choice Questions on The value of sin theta cos theta 2 ........ for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

The value of sin theta cos theta 2 ........

Quantitative Aptitude (RRB NTPC) Trignometry
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    The value of (sinθ + cosθ)2 =

    1 + sin2θ

    Incorrect Answer

    sin2θ + cos2θ

    Incorrect Answer

    1 + 2 cosθ sinθ

    Correct Answer

    cos2θ + 1

    Incorrect Answer
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    Explanation:

    (sinθ +cosθ)2 = sin2θ +cos2θ + 2sinθ.cosθ
    = 1+2sinθ cosθ (sin2θ +cos2θ=1)

    By: Barka Mirza
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