1.

Consider the system of equations x cos ^(3) y + 3 x cosy sin^(2) y = 14 t o (1) and x sin^(3) y + 3 x cos^(2) y sin y = 13 to (2) The value of x is / are

Answer»

`PM 5 SQRT(5)`
`pm sqrt(5)`
`pm (1)/(sqrt(5))`
`pm (1)/(sqrt(5))`

ANSWER :A


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