Multiple Choice Questions on If cos alpha cos beta cos gamma 0 where then what is the value of sin alpha sin beta sin gamma ........ for NDA Exam Preparation

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Multiple Choice Questions

If cos alpha cos beta cos gamma 0 where then what is the value of sin alpha sin beta sin gamma ........

Mathematics (NDA) Trigonometry
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    If cos α +cos β +cos γ =0 , where 0<\alpha\leq \frac{\pi}{2},0<\beta\leq \frac{\pi}{2},0<\gamma \leq \frac{\pi}{2} ,

     then what is the value of sin α + sin β + sin γ?

    0

    Incorrect Answer

    3

    Correct Answer

    5√2/2

    Incorrect Answer

    3√2/2

    Incorrect Answer
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    Explanation:
    cosα+cosβ+cosγ=0,
    0 < α ≤ π/2, 0 < β ≤ π/2, 0 < γ < π/2
    ⇒α=β=γ=π/2
    ⇒sin α + sin β+sin γ= 3

    By: Munesh Kumari
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