witcol386
04.12.2021 •
Mathematics
If cotθ=1/
, the value of 
θ + 
θ is
a) 1
b) 40/9
c) 38/9
d) 5
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Ответ:
x = 6
y = -6
Step-by-step explanation:
x + y = 0 (Multiply by -1)
x + 9y= -48
-x - y = 0
x + 9y= -48
8y = -48
y = -6
x + y = 0
x - 6 = 0
x = 6