Question 905071
given that sin A = 1 - sqrt(2) show that cos^2A +2SinA = 0
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{{{sinA=1-sqrt(2)}}}
{{{cos^2(A)+2sin(A)}}}
{{{1-sin^2(A)+2(1-sqrt(2))}}}
{{{1-(1-2sqrt(2)+2)+2-2sqrt(2)}}}
{{{1-1+2sqrt(2)-2+2-2sqrt(2)=0}}}