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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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Gennadij [26K]

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Personally, I would divide each side by 3                x^2 - 4  =  0

Then I would add 4 to each side                              x^2        =  4

Then I would take the square root of each side:     x  =  +4
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Answer:

Step-by-step explanation:

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Answer:

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3 years ago
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Step-by-step explanation:

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2 years ago
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