1.

If A(n)=sin^(n)alpha+cos^(n)alpha, then A(1)A(4)+A(2)+A(5)=

Answer»

`A(1)A(2)+A(4)A(5)`
`A(1)A(6)+A(2)A(3)`
`A(1)A(3)+A(2)A(6)`
`A(1)A(2)+A(3)A(6)`

ANSWER :B


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