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# trig

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So cos 56 degrees = 10/x.
I need to find the value of x.
Guest Feb 1, 2012
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#1
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cos( 56 ) = 10/x | *x
cos( 56 ) * x = 10 | / cos(56)
x= 10 / cos( 56 )

10 / cos( 56 )
$$\cos{56}=\frac{10}{x}\\ x=\frac{10}{\cos56}\\ \;\;\approx17.8829$$