MATH

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solve for theda given 0<theda<2pi
cos theta= - (sqrt 3)/ 2

  • MATH -

    you know that cos π/6 = √3/2
    You also know that cos(x) < 0 in QII,QIII
    So, ...

  • MATH -

    so ould it be sin pi.6 and tan pi/6??

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