Question: -1, -1 Y If cos-x 4x * = a, then - 4xy cos a + y is equal to CoS - 2 (A) 2

-1, -1 Y If cos-x 4x * = a, then - 4xy

-1, -1 Y If cos-x 4x * = a, then - 4xy cos a + y is equal to CoS - 2 (A) 2 sin a () 4 (C) 4sin'a (D) -4sin?a

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