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Math Help - SAT II Math trig help

  1. #1
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    Exclamation SAT II Math trig help

    The questions are: (calculators allowed)
    1. If sec theta=-(5/4) and sin theta>0, then tan theta=???
    2. If x is an angle in quadrant III and tan(x-30(degrees))=cotx, find x
    3.Expressed as a function of an acute angle, cos 310(deg.)+cos 190(deg.)=???

    I can list the multiple choice answers if that helps, and when explaining, use diagrams if possible to help me understand better, thank you.
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  2. #2
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    Quote Originally Posted by maximade View Post
    1. If sec theta=-(5/4) and sin theta>0, then tan theta=???
    Have you seen this?

    1+\tan^2\theta = \sec^2\theta
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