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For any "Delta"A B C the value of determ...

For any `"Delta"A B C` the value of determinant `|sin^2\ \ A cot A1sin^2B cot B1sin^2\ \ C cot C1|` is equal to- `s in A s in B s in C` b. `1` c.`0` d. `s in A+s in B+s in C`

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