Question

Fie ABC triunghi dreptunghic in A. Daca AC=2cm si sinB=1/2,aflati lungimea laturii AB

Answer 1

sin B =  $\frac{cateta opusa}{ipotenuza} = \frac{1}{2}$ ⇒ BC = 4 
Apoi cu Pitagora aflam AB = $\sqrt{ BC^{2} - AC^{2} }$ ⇒ AB = $\sqrt{16-4} = \sqrt{12} = 2 \sqrt{3}$

Answer 2

Am atasat inca o rezolvare !