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    i don't understand what they did between sinc and c [in the attached image]
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    (Original post by entertainmyfaith)
    i don't understand what they did between sinc and c [in the attached image]
    Inverse sine'd both sides..?
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    They took the sine inverse of both sides, ie using calculatir, they found the angle whose sine gave a value of 0.744
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    (Original post by RDKGames)
    Inverse sine'd both sides..?


    (Original post by Radioactivedecay)
    They took the sine inverse of both sides, ie using calculatir, they found the angle whose sine gave a value of 0.744
    i was trying to divide it by sin on my calculator- thank you!
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    From here use the cosine rule to obtain the missing length and you have your perimeter (if you haven’t already haha)
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