document.write( "Question 1026450: PLEASE HELP\r
\n" ); document.write( "\n" ); document.write( "Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)\r
\n" ); document.write( "\n" ); document.write( "sin^2 θ − 7 sin θ − 8 = 0
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Algebra.Com's Answer #641697 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
This is a quadratic equation.
\n" ); document.write( "Let \"u=sin%28theta%29\"
\n" ); document.write( "\"u%5E2-7u-8=0\"
\n" ); document.write( "\"%28u-8%29%28u%2B1%29=0\"
\n" ); document.write( "Two \"u\" solutions:
\n" ); document.write( "\"u-8=0\"
\n" ); document.write( "\"u=8\"
\n" ); document.write( "and
\n" ); document.write( "\"u%2B1=0\"
\n" ); document.write( "\"u=-1\"
\n" ); document.write( "Back substituting,
\n" ); document.write( "\"sin%28theta%29=8\"
\n" ); document.write( "There is no theta solution here since sin can never exceed 1.
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\n" ); document.write( ".
\n" ); document.write( "\"sin%28theta%29=-1\"
\n" ); document.write( "\"theta=%283%2F2%29pi%2B2pi%2Ak\" where k is any integer.
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