If A+B+C=0 , then cot A cotB + cot B cot C+ cot C cot A =

If A,B ,C are the angle of Delta ABC then cot A .cot B + cot B . "" cot C + cot C.cot A = ............... A) 0 B) 1 C) 2 D) -1

If A,B ,C are the angle of Delta ABC then cot A .cot B + cot B . "" cot C + cot C.cot A =

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

cot A+cot B+cot C

If A+B+C=pi and tan A=1, tanB =2, then (cot C)/(cot A cot B+cot B cot C+cot C cot A) is equal to

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

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

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

If A + B + C =180^@ , prove that : cot B cot C + cot C cot A + cot A cot B = 1 .