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Trigonometry: Fitzpatrick 3U EX 4.1

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annaconda:
Hello!

I am stuck for this question:

P, A, B, C are four points in a plane such that the angles BPA and CPA are obtuse and on opposite sides of PA. PA = 8CM, BP = 10 CM, PC = 12 CM, AB = 14CM, and AC = 18CM. Calculate the length of BC and the area of the triangle ABC.


Thanks in advanced!!

RuiAce:




___________________________________

annaconda:
thank you!!!

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