document.write( "Question 955814: If sin theta=3/10,theta in quadrant II,find the exact value of
\n" ); document.write( "(a)cos theta (b)sin(theta+pi/6) (c)cos(theta-pi/3) (d)tan(theta+pi/4)\r
\n" ); document.write( "\n" ); document.write( "Help me please!!!
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Algebra.Com's Answer #583908 by Alan3354(69443)\"\" \"About 
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If sin theta=3/10,theta in quadrant II,find the exact value of
\n" ); document.write( "(a)cos theta
\n" ); document.write( "\"cos%5E2%28t%29+%2B+sin%5E2%28t%29+=+1\" for all angles
\n" ); document.write( "--> \"cos%28t%29+=+sqrt%281+-+sin%5E2%28t%29%29\"
\n" ); document.write( "cosine is negative in Q2
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\n" ); document.write( " (b)sin(theta+pi/6)
\n" ); document.write( "sin(A+B) = sin(A)cos(B) + sin(B)cos(A)
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\n" ); document.write( "(c)cos(theta-pi/3)
\n" ); document.write( "Look up \"half angle formulas\" on Wikipedia.
\n" ); document.write( "It's explained in detail there.
\n" ); document.write( " (d)tan(theta+pi/4)
\n" ); document.write( "tan = sin/cos
\n" ); document.write( "Look up \"half angle formulas\" on Wikipedia.
\n" ); document.write( "It's explained in detail there.
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