diffshahid99901
diffshahid99901
19-02-2018
Mathematics
contestada
What is the value of x?
Respuesta :
calculista
calculista
19-02-2018
see the attached figure with the letters
cos (alfa)=2/dAB
and
cos(alfa)=dAB/(6+2)
2/dAB=dAB/8---------------- > dAB²=16-------------- > dAB=4
x²+2²=dAB²-------------- > x²=dAB²-2²=(4)²-4=16-4=12
x=2√3
the answer is x=2√3 units
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