1.

For 0leCos^(-1)xlepiand-pi/2leSin^(-1)xlepi/2, the value of cos(Sin^(-1)x+2Cos^(-1)x)"at "x=1/5 is

Answer»

`(-2sqrt(6))/5`
`(-SQRT(6))/5`
`(2sqrt(6))/5`
`sqrt(6)/5`

ANSWER :A


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