document.write( "Question 812336: SIN A =-2/7 AND A IS LIE ON QUADRANT III..
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Algebra.Com's Answer #489196 by stanbon(75887)\"\" \"About 
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SIN A =-2/7 AND A IS LIE ON QUADRANT III..
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\n" ); document.write( "Note: In QIII, x is negative and y is negative
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\n" ); document.write( "Since sin = y/r, y = -2 and r = 7
\n" ); document.write( "So, x = -sqrt[7^2-2^2] = -sqrt(45) = -(3)sqrt(5)\r
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\n" ); document.write( "Your Problem:
\n" ); document.write( "tan = y/x
\n" ); document.write( "So tan(A) = [-2]/[-(3)sqrt(5)] = (2/3)sqrt(5)/5 = (2/15)sqrt(5)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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