1.

If |cos theta (sin theta + sqrt( sin ^(2) theta + sin ^(2) alpha ) )| le kthen the value of k is

Answer»

`SQRT (1 + COS ^(2) alpha )`
`sqrt (1 + SIN ^(2) alpha )`
`sqrt (2 + cos ^(2) alpha )`
`sqrt (2 + sin ^(2) alpha )`

Answer :B


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