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in triunghiul ABC avem AB=8 , AC=8 si m(BAC)= 30'. calculati aria triunghiului ABC

Răspuns :

[tex]a \: abc = \frac{ab \times bc \times \sin( < bac) \: }{2} [/tex]

[tex] \frac{8 \times 8 \times \sin(30) }{2} [/tex]

[tex] \frac{64 \times \frac{1}{2} }{2} [/tex]

[tex] \frac{32}{2} [/tex]

=16