document.write( "Question 390905: Hello,
\n" ); document.write( "Please hep me to solve this problem: Find all exact value solutions [o,360) for sin^2x-2sinx-3 = 0\r
\n" ); document.write( "\n" ); document.write( "My work:
\n" ); document.write( "x^2-2x-3 = 0
\n" ); document.write( "sinx = 3
\n" ); document.write( "sinx = -1\r
\n" ); document.write( "\n" ); document.write( "sin^-1(3) = None
\n" ); document.write( "sin^-1(-1) = -90\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #277239 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!
sin^-1(-1) = -90 is actually correct, BUT -90 is not in [0, 360), so the desired solution is -90 + 360 = 270. \n" ); document.write( "

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