Question: The number of values of a in (0.2n) for which 2 sin'a-7sin'a + 7sin a = 2. is 1 1) 6 2) 4 3)

The number of values of a in (0.2n) for which 2 sin'a-7sin'a 

The number of values of a in (0.2n) for which 2 sin'a-7sin'a + 7sin a = 2. is 1 1) 6 2) 4 3) 3 4) 1

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