Multiple Choice Questions on The value of sin y minus z sin y z 2siny sin x minus z sin x minus z 2sinx is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The value of sin y minus z sin y z 2siny sin x minus z sin x minus z 2sinx is ........

Quantitative Aptitude ( CCS) Trignometry
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    The value of (sin(y−z)+sin(y+z)+2siny)/(sin(x−z)+sin(x−z)+2sinx) is,

    cosx/siny

    Incorrect Answer

    sinx/tany

    Incorrect Answer

    sinz

    Incorrect Answer

    siny/sinx

    Correct Answer
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    Explanation:

    Given expression,
    (sin(y−z)+sin(y+z)+2siny)/(sin(x−z)+sin(x−z)+2sinx)
    =(2sinycosz+2siny)/(2sinxcosz+2sinx)
    =2siny(1+cosz)/2sinx(1+cosz)
    =siny/sinx.

    By: MIRZA SADDAM HUSSAIN
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