kyleeb00
02.07.2021 •
Mathematics
Mischa wrote the quadratic equation 0=_x2+4x-7 in standard form. If a = -1, what is the value of c in her equation?
C=-7
C= 1
c=4
c=7
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Ответ:
side AC / sin (71) = side BC / sin (40)
25 / 0.94552 = side BC / 0.64279
side BC = 16.9956743379
side BC = 17 m (rounded)
Source:
http://www.1728.org/trigtut2.htm