document.write( "Question 675342: Find the exact value of the trigonometric function given that sin u = 12/13 and cos v = -4/5. (Both u and v are in Quadrant II.)
\n" ); document.write( "cos(u − v)
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Algebra.Com's Answer #419768 by lynnlo(4176)\"\" \"About 
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if u and v are in the 4th. quadrant
\n" ); document.write( "y=-12,and r=13
\n" ); document.write( "sin v=y/r=7/25
\n" ); document.write( "cosv=x/r=25/25
\n" ); document.write( "tanv=y/x=7/24
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