2(sin6+cos6)-3(sin4+cos4)+1=0
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2(0.1+0.99)-3(0.1+0.99)+1=0
value of sin6 is 0.1
cos6=0.99
sin4=0.1(approx.)
cos4=0.99
value of sin6 is 0.1
cos6=0.99
sin4=0.1(approx.)
cos4=0.99
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