If angle C of a triangle ABC be obtuse, then (A) `0 < tan A tan B < 1` (B) `tan A tan B > 1` (C) `tan A tan B=1` (D) none of these

If in a triangle ABC , the angle C is obtuse then tan A *tan B is

If triangle ABC , is obtuse angled at C , then

If A, B and C are angles of a triangle such that angleA is obtuse, then show tan B tan C lt 1.

For a /_\ABC, if cotA.cotB.cotCgt0 , then nature of the triangle is (A) acute angled triangle (B) right angled triangle (C) obtuse angled triangle (D) none of these

The points (0,(8)/(3)),(1,3), and (82,30) are the vertices of (A) an obtuse-angled triangle (B) an acute-angled triangle (C) a right-angled triangle (D) none of these

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

In a triangle ABC, right angled at C, find the value of tan A + tan B in terms of the sides a,b,c.

Statement-1: If A, B, C are the angles of a triangle such that angle A is obtuse, then tan C gt1. Statement-2: In any DeltaABClt we have tanA=(tanB+tanC)/(tanBtanC-1)