Question

In triunghiul ABC cu m(Â)=90°,sinB =0.25 Stiind ca: a) AC=10 cm aflati BC b) BC=24 cm aflati AB Va rog ajutati ma

Answer 1

B
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A______________C
a)sinB=AC/BC=25/100=1/4 =>BC=4AC =>BC=40 cm
b)BC=24 cm =>AC=6 cm
AB^2 = BC^2 - AC^2
AB^2 = 576 - 36 = 540 => AB=6rad15 cm