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Math Help - Aiming Trig

  1. #1
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    Question Aiming Trig

    Is it possible to find angle A of triangle ABC knowing length of AB, angle B, values of s and v, and when length of BC=st and length of AC=vt?
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  2. #2
    MHF Contributor
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    Sine Rule

    Hello dvid

    Welcome to Math Help Forum!
    Quote Originally Posted by dvid View Post
    Is it possible to find angle A of triangle ABC knowing length of AB, angle B, values of s and v, and when length of BC=st and length of AC=vt?
    Yes, it is. Using the Sine Rule:

    \frac{a}{\sin A}= \frac{b}{\sin B}

    \Rightarrow \sin A = \frac{a\sin B}{b}

    = \frac{BC \sin B}{AC}

    = \frac{st\sin B}{vt}

    = \frac{s \sin B}{v}

    Grandad
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