November 2018 2 21 Report

1 . W trójkącie ABC dane są : a=8\sqrt{7} , c=4 , cos\alpha=-0,75.

Oblicz sin\gamma

2. Oblicz miarę kąta \alpha trójkąta ABC , w którym a=20\sqrt{3} , b=10\sqrt{3} oraz sin\beta =0,25


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