document.write( "Question 278839: Solve for B to the nearest tenth of a degree in interval odegrees<= B<= 360degrees forth equation \r
\n" ); document.write( "\n" ); document.write( "3(1-sin^2 B) = sin B\r
\n" ); document.write( "\n" ); document.write( "I tried this
\n" ); document.write( "The quadratic equation- which left me with 1 +/- square root 37/ 6 if this is correct- how am i supposed to enter this into the calculator- if it is not right then where did I go wrong?
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Algebra.Com's Answer #202846 by CharlesG2(834)\"\" \"About 
You can put this solution on YOUR website!
Solve for B to the nearest tenth of a degree in interval odegrees<= B<= 360degrees forth equation
\n" ); document.write( "3(1-sin^2 B) = sin B
\n" ); document.write( "I tried this
\n" ); document.write( "The quadratic equation- which left me with 1 +/- square root 37/ 6 if this is correct- how am i supposed to enter this into the calculator- if it is not right then where did I go wrong?\r
\n" ); document.write( "\n" ); document.write( "3(1 - sin^2 B) = sin B
\n" ); document.write( "1 - sin^2 B = 1/3 * sin B
\n" ); document.write( "sin^2 B - 1 = -1/3 * sin B (divided both sides by -1)
\n" ); document.write( "sin^2 B + 1/3 * sin B - 1 = 0
\n" ); document.write( "replace sin B with x
\n" ); document.write( "x^2 + 1/3 * x - 1 = 0
\n" ); document.write( "\"+x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "\"+x+=+%28-1%2F3+%2B-+sqrt%28+1%2F9+%2B+4+%29%29%2F2+\"
\n" ); document.write( "\"+x+=+-1%2F6+%2B-+sqrt%2837%29%2F6+\"
\n" ); document.write( "\"+x+=+%28-1+%2B-+sqrt%2837%29%29%2F6+\"
\n" ); document.write( "\"+x1+=+0.84712709+\" (approximate)
\n" ); document.write( "\"+x2+=+-1.18046042+\" (approximate)
\n" ); document.write( "since x = sin B
\n" ); document.write( "we need to solve sin^(-1) x = B
\n" ); document.write( "x2 won't work since x needs to be between -1 and 1
\n" ); document.write( "solving with x1
\n" ); document.write( "B = 57.9 degrees (approximate)\r
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