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Value of (1-(cos61^0)/(cos1^0))*(1-(cos6...

Value of `(1-(cos61^0)/(cos1^0))*(1-(cos62^0)/(cos2^0))*(1-(cos63^0)/(cos3^0)) .......... *(1-(cos119^0)/(cos59^0))` (a)`-1` (b) `1` (c) `2` (d) `-2`

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