[" If "A+B+C=(pi)/(2)" ,show that "],[" (i) "quad cot A+cot B+cot C=cot A cot B cot C]

a cot A+b cot B+c cot C=

cot B cot C+cot C cot A+cot A cot B=1

If A+B+C= pi//2 then show that cot A + cot B+ cot C=cot A cot B cot C

If A + B + C =pi/2 , prove that : cot A + cot B + cot C = cot A cot B cot C .

If A+B+C= 90^@ , Prove that cot A+cot B+cot C=cot A cot B cot C

If A + B + C = pi , show that cot A cot B + cot B cot C + cot C cot A = 1

If A+B+C=180^(@), then cot A+cot B+cot Ccot A cot B cot C

If A+B+C=pi , prove that : cot, A/2+ cot, B/2 + cot, C/2 = cot, A/2 cot, B/2 cot, C/2

If A+B+C= (pi)/(2) prove that:m (i) "tan"A tan B +"tan"B tan C +"tan" C tan A =1 (ii) cot A +cot B+ cot C= cot A cot B cot C.

If A +B +C = 90 ^@ then ( cot A+ cot B + cot C) /(cot A cot B cot C ) =