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Math Help - trignometry

  1. #1
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    Question trignometry

    how can we prove that sinA=opp/hyp
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  2. #2
    Member roshanhero's Avatar
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    It is how we define this ratio mate.I don't think that we can prove it.
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  3. #3
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    i mean that how can we prove sinA is same in all rt.angled triangles
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  4. #4
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    skeeter's Avatar
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    Quote Originally Posted by rohith14 View Post
    i mean that how can we prove sinA is same in all rt.angled triangles
    sides of similar triangles are proportional
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