1.

If acos^(3)alpha+3cosalphasin^(2)alpha=m and asin^(3)alpha+3cos^(2)alphasinalpha=n, then (m+n)^(2//3)+(m-n)^(2//3)=?

Answer»

a
2A
`2a^(2)`
`2a^(2//3)`

ANSWER :A::B::C


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