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ohaa [14]
3 years ago
6

Triunghiul isoscel ABC are latura [BC] situata intr un plan alfa si se proietcteaza pe plan dupa triunghiul dreptunghic DBC. Sti

inda ca m(BDC)=90°, iar BD=16 cm si CD=12 cm, aflati
a) cosinusul unghiului ABC





b) lungimea laturii [BC] a triunghiului ABC
Mathematics
1 answer:
Zarrin [17]3 years ago
4 0
Maybe try b
I think it b
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