Question

Va roooog cat mai repede

Answer 1

Răspuns:

Aria teren=120•90=10800 m^2

Aria celor două peluze = Aria cerc =pi•90^2=3,1415•8100=25446,15 m^2 Da, este mai mare.

AM^2 = 90^2 + 60^2

AM^2 = 8100+3600

AM^2 = 11700

AM=30rad13 m

sinMAB = MB/AM = 60/30rad13 = 2rad13/13

sinDAC = DC/AC

AC^2 = 120^2 + 90^2

AC^2 = 14400+8100

AC^2 = 22500

AC=150 m

sinDAC=90/150=3/5

sinDAC+sinCAM+sinMAB=sin 90°=1

3/5 + sinCAM+2rad13/13 = 1

sinCAM = 1 - 3/5 - 2rad13/13

sinCAM = (65-39-10rad13)/65

sinCAM = (26-2rad13)/65