document.write( "Question 939306: What is the exact value of Sin (-7pi/2) ? \n" ); document.write( "

Algebra.Com's Answer #572370 by srinivas.g(540) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"sin%28-7%2Api%2F2%29+=++sin%28-7%2A90%29+\"$ as $\"+pi%2F2++=+90\"$ degrees
\n" ); document.write( " = $\"++sin+%28-630%29\"$
\n" ); document.write( " = $\"-sin%28630%29\"$ as $\"sin+%28+-theta+%29+=-sin%28theta%29\"$
\n" ); document.write( " = $\"-sin%28720-90%29\"$
\n" ); document.write( " = $\"-+sin+%2890%29\"$
\n" ); document.write( " = $\"-1\"$ as sin 90 = 1
\n" ); document.write( " = -1
\n" ); document.write( " Result : Sin (-7pi/2) = -1 \n" ); document.write( "

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