document.write( "Question 1161789: Find the acute angle that the curve y=1-3x^3 cut the x-axis. \n" ); document.write( "

Algebra.Com's Answer #785403 by Alan3354(69443) $\"\"$ $\"About$

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Find the acute angle that the curve y=1-3x^3 cut the x-axis.
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\n" ); document.write( "Find the x-intercept
\n" ); document.write( "3x^3 = 1
\n" ); document.write( " $\"x+=+root%283%2C1%2F3%29\"$
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\n" ); document.write( "Find the slope at $\"x+=+root%283%2C1%2F3%29\"$
\n" ); document.write( "y' = -9x^2
\n" ); document.write( "y' = $\"-9%2Aroot%283%2C1%2F9%29\"$
\n" ); document.write( "y' =~ -4.3267 at y = 0 = tangent of the angle
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\n" ); document.write( "Angle =~ 76.986 degs\r
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