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 number of values of y in [0, 6 pi] are

Answer»

5
3
4
6

Answer :D


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