document.write( "Question 607443: what is the amplitude and period of y=2/3cos(pi/10)) \n" ); document.write( "
Algebra.Com's Answer #382718 by lawdej(58)\"\" \"About 
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\n" ); document.write( "for y=a cos(kx),period=2pi/k ,amplitude=a
\n" ); document.write( "example y=2/3cos(pi/10 x)
\n" ); document.write( "amplitude=2/3
\n" ); document.write( "period=20
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