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Trig

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If sin(t)=4/5 & 0<t<pi/2, find the following: a)sin t(-t) b) sin(t-2pi) c)cos t d)cos(pi-t)

  • Trig - ,

    sin(-t) = -sin(t) = -4/5
    sin(t-2pi) = sin(t) = 4/5
    cos(t) = 3/5
    cos(pi-t) = -3/5

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