Question

Hey tell me what does it mean?
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Answer 1

it means theta tends to -π/2to π/2

i think it is a maximum and minimum case of wire

as cos theta range lie between [-1,1]

and domain [-π/2,π/2]

in instigation we find area mainly in difinite intgrals so the wire area lie B/w -π/2 to π/2

lower limit -π/2

upper limit π/2

we also show it in graphically and find its area