1.

The area of triangle formed by the vertices `(a, 1/a), (b, 1/b), (c, 1/c)` isA. `|((a+b)(b+c)(c+a))/(2abc)|`B. `|((a-b)(b-c)(c-a))/(2abc)|`C. `|((a-(1)/(a))(b-(1)/(b))(c-(1)/(c )))/(2)|`D. `|((a-1)(b-1)(c-1))/(2abc)|`

Answer» Correct Answer - B
Area of triangle ………..
`Delta=(1)/(2) ||(a,1//a,1),(b,1//b,1),(c,1//c,1)||=(1)/(2)|(1)/(abc)||(a^(2),1,a),(b^(2),1,b),(c^(2),1,c)||`
`= (1)/(2)|((a-b)(b-c)(c-a))/(2abc)|`


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