[" 11.If "tan^(2)A+tan^(2)B+tan^(2)C-tan B tan C-tan C tan A],[-tan A tan C=0" then "],[Delta ABC" is "]

If tan^(2) A + tan^(2)B+tan^(2)C -tan B tan c-tan C tan A-tan A tan B=0 then DeltaABC is

If tan^(2)A+tan^(2)B+tan^(2)C-tan B tan C-tan C tan A-tan A tan B then Delta ABC is (i) Isosceles (ii) Right Angled (iii) Equilateral (iv) Right angled isosceles

(a) tan A+tan B+tan C=tan A tan B tan C

in triangle ABC,tan A+tan B+tan C=

In Delta ABC , tan A + tan B+ tan C=

In Delta ABC, tan 2A+ tan 2B+ tan 2C=

(tan A+tan B-tan C+tan A tan B tan C)/(1-tan A tan B+tan B tan C+tan C tan A)

Delta ABC,tan A+tan B+tan C=6 and tan A tan B=2 then the triangle is

In Delta Prove that tan A+tan B+ tan C =tan A tan B tan C .

In Delta ABC, if tan B tan C+tan C tan A+tan A tan B=sqrt3 tan A tan B tan C then the triangle is