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Problema TG 29 pag. 94 UPT 2019.
Intr-un triunghi dreptunghic ABC au loc relatiile cos(B)>cos(C) si tg(B)+tg(C)=6.Sa se calculeze sin(B)-sin(C).
a) [tex]-\frac{2\sqrt{3} }{3}[/tex]
b) [tex]-\frac{\sqrt{6} }{3}[/tex]
c) [tex]-\sqrt{2}[/tex]
d) [tex]\sqrt{2}[/tex]
e) [tex]\frac{\sqrt{6} }{3}[/tex]
f) [tex]\frac{2\sqrt{3} }{3}[/tex]