Assertion A: If `x+y+z=xyz` then `sum((2x)/(1-x^2))=pi((2x)/(1-x^2))` Reason R: If `tanA+tanB+tanC=tanAtanBtanC` then `A+B+C=n pi, n in N`

Assertion (A): If x+y+z=xyz then sum((2x)/(1-x^(2)))=pi((2x)/(1-x^(2))) Reason (R):If tan A +tan B + tan C =tanA tan B tan C then A+B+C=npi, n in N

Assertion (A) : tan^(-1)x is ((-pi)/(2),(pi)/(2)) Reason (R ) : Domain of tan^(-1)x is R.

If A+B+C=pi , Prove that tanA+tanB+tanC=tanA.tanB.tanC

If A+B+C= pi/2 , show that : tanA tanB + tanB tanC + tanC tanA=1

If A+B+C= pi/2 , show that : tanA tanB + tanB tanC + tanC tanA=1

If A+B+C=pi then (tanA+tanB+tanC)/(tanA tan B tanC) .......... A) 0 B) 2 C) 1 D) -1

If A, B, C are angles of a triangle and if none of them is equal to pi/2 , then prove that tanA+tanB+tanC=tanAtanBtanC

If cos ecx=1+cot x then x=2n pi,2n pi+(pi)/(2)

Number of triangles A B C if tanA=x ,tanB=x+1,a n dtanC=1-x is ________

Number of triangles A B C if tanA=x ,tanB=x+1,a n dtanC=1-x is ________