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equation solving - After NumberForm I cannot apply a Sine function. Why?


After NumberForm I cannot apply a Sine function. Why?


This works:


sol1 = x /. Solve[x^2 - 3 == 0, x]
Sin[sol1]


Output = {−Sin[√3],Sin[√3]}


Also this works:


sol2 = x /. Solve[x^2 - 3 == 0, x] // N
Sin[sol2]

Output = {−0.987027,0.987027}


Then why doesn't this work? Meaning, why is Sin[] not applied to the elements of the list?


sol3 = NumberForm[x /. Solve[x^2 - 3 == 0, x] // N, 6]
Sin[sol3]


Output = Sin[{−1.73205,1.73205}]


What can I do to make this work?




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