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the greatest and least values of (sin^(-...

the greatest and least values of `(sin^(-1) x)^2+(cos^(-1)x)^2`

A

`(5pi^(2))/4 and (pi^(2))/8 `

B

` pi/2 and (-pi)/2 `

C

` (pi^(2))/4 and (-pi^(2))/ 4 `

D

` (pi^(2))/4 and 0 `

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The correct Answer is:
A
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