If veca,vecbandvecc are position vectors...

If `veca,vecbandvecc` are position vectors of the vertices of the triagnle ABC , then `(|(veca-vecc)xx(vecb-veca)|)/((vecc-veca)*(vecb-veca))` is equal to

A

cot A

B

cot C

C

`-tan C `

D

tan A

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