Mathematics, 08.07.2019 01:30, justintsmith6415

Fie trapezul abcd dreptunghic in a, bc||ad, cd=12, m unghiului bcd=60°, bc=2ad. a) aratati ca perimetrul trapezului abcd este egal cu 6(5+radical din 3) cm. b)calculati aria lui abcd. c)aflati sinusul unghiului bca

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Fie trapezul abcd dreptunghic in a, bc||ad, cd=12, m unghiului bcd=60°, bc=2ad. a) aratati ca perim...

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