If the equation \[{{(si{{n}^{-1}}x)}^{3}}+{{(co{{s}^{-1}}x)}^{3}}=a{{\pi }^{2}}\] has no real root then

If the equation \[{{(si{{n}^{-1}}x)}^{3}}+{{(co{{s}^{-1}}x)}^{3}}=a{{\

1.	If the equation \[{{(si{{n}^{-1}}x)}^{3}}+{{(co{{s}^{-1}}x)}^{3}}=a{{\pi }^{2}}\] has no real root then
A.	\[a>0\]
B.	\[a<\frac{1}{32}\]
C.	\[a<3\]
D.	None of these
Answer» C. \[a<3\]

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If the equation \[{{(si{{n}^{-1}}x)}^{3}}+{{(co{{s}^{-1}}x)}^{3}}=a{{\pi }^{2}}\] has no real root then

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