Question

$\sf \: If \: sin A + sin²A = 1 a cos^{12 }A + \: \: \: \: \: \: \: \: \: \: \\ \sf bcos^8 A + ccos^6 A - 1 = 0acos A− 1 \\ \sf= 0 \: then b+\frac{c}{a}+b = ? \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$
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Answer 1

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