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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-6

  • question_answer
    If \[\theta \] be acute angle and cos \[\theta \] \[\frac{15}{17},\]then the value of cot (\[90{}^\circ \] \[-\]\[\theta \] ) is

    A)  \[\frac{2\sqrt{8}}{15}\]            

    B)  \[\frac{8}{15}\]

    C)  \[\frac{\sqrt{2}}{17}\]              

    D)         \[\frac{8\sqrt{2}}{17}\]

    Correct Answer: B

    Solution :

     cos\[x\] + cosy = 2 \[\because \cos \,x\,\underline{<}\,\,I\] \[\Rightarrow \]\[\cos \,x=1\,\,;\,\,\cos y=1\] \[\Rightarrow \]\[x=y=0{}^\circ \] \[\therefore \]sin \[x\] + sin y = 0


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