document.write( "Question 252482: 4 sin squared x + 1= - 4 sin x \n" ); document.write( "

Algebra.Com's Answer #184416 by stanbon(75887) $\"\"$ $\"About$

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4 sin squared x + 1= - 4 sin x
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\n" ); document.write( "4sin^2(x) + 1 = -4sin(x)
\n" ); document.write( "----
\n" ); document.write( "4sin^2(x) + 4sin(x) + 1 = 0
\n" ); document.write( "Factor:
\n" ); document.write( "(2sin(x)+1)^2 = 0
\n" ); document.write( "---
\n" ); document.write( "2sin(x)+1 = 0
\n" ); document.write( "2sin(x) = -1
\n" ); document.write( "sin(x) = -1/2
\n" ); document.write( "x = 150 degrees of x = 210 degrees.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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