maths---urgently needed

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range of
sin(siny) +cos(siny)

  • maths---urgently needed -

    sin y can take on values between -1 and 1.

    For any value of siny between -1 and 1, the range of
    sin(siny) + cosine(siny) is between
    -sqrt2 and +sqrt2.
    Extreme values of sin(siny) + cos(siny) occur where sin(siny) = cos(siny)
    siny = +or- (sqrt2)/2

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