September 2018 1 42 Report

dany jest trojkat ABC, w ktorym |AB|=2√(19) i |∢ACB|=120°.
a)wyznacz dlugosci pozostalych bokow trojkata, wiedzac ze ich suma jest rowna 10
b)oblicz pole trojkata

odp:
a) a=4,b=6 lub a=6,b=4
b) P=6√3


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