bryan334
27.07.2019 •
Mathematics
Write an expression that is equivalent to z+z+z+z.
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Ответ:
Ответ:
cos60⁰=3/y
y×cos60⁰=3
y=3/cos60⁰
y=3/0.5
y=6
y²=x²+3²
6²=x²+3²
36=x²+9
x²=36-9
x²=27
x=square root of 27
x=5.19