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OpenStudy (anonymous):
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OpenStudy (anonymous):
what the equation
OpenStudy (anonymous):
|dw:1391138622172:dw|
OpenStudy (mrdoe):
\[\cos(39) = x/12.1\] solve for x
OpenStudy (anonymous):
do you have choices
OpenStudy (anonymous):
no
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OpenStudy (anonymous):
Since x is on the right side of the equation switch the sides so it is on the left side of the equation x/12.1=cos(39) cos of 39 = 0.7772 x/12.1= 0.7772 Divide 1 by 12.1 = 0.0826 0.0826x/0.0826 = 0.7772/0.0826 Simplify the left side of the equation canceling the common factors x= 0.7772/0.0826 simplify x=9.4035
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