krystinayagel013
27.09.2020 •
Mathematics
For f(x) = 322 - x , find the value of f(-9).
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Ответ:
Step-by-step explanation:
cos(30) = Adj/hyp
cos(30) = 6 /x
x = 6 / cos(30)
x = 6 / (
/ 2)
x = 12 /
( 12 /
)^2 = 6^2 + y^2
( 12 /
)^2 - 36 = y^2
144/3 -36 = y^2
48-36=y^2
12 = y^2