Question

If $\displaystyle \sin A + \sin^{2} A = 1\:and \displaystyle\: a \cos^{12} A + b \cos^{8} A+c\: cos^6 A - 1 = 0\:then\: \displaystyle b+\frac{c}{a}+b = ?$

Answer 1

Answer:

If $\displaystyle \sin A + \sin^{2} A = 1\:and \displaystyle\: a \cos^{12} A + b \cos^{8} A+c\: cos^6 A - 1 = 0\:then\: \displaystyle b+\frac{c}{a}+b = ?$

Answer 2

Answer:

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