MadisonAvocado1671 MadisonAvocado1671
  • 25-01-2021
  • Mathematics
contestada

Triunghiul isoscel ABC are latura [BC] situata intr un plan alfa si se proietcteaza pe plan dupa triunghiul dreptunghic DBC. Stiinda ca m(BDC)=90°, iar BD=16 cm si CD=12 cm, aflati





a) cosinusul unghiului ABC





b) lungimea laturii [BC] a triunghiului ABC

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mia683 mia683
  • 25-01-2021
Maybe try b
I think it b
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