In `ABC` with usual notations, if `r=1,r_1=7 and R=3,` the `ABC` is equilateral (b) acute angled which is not equilateral obtuse angled (d) right angled

In ABC with usual notations, if r=1,r_1=7 and R=3, the (a) ABC is equilateral (b) acute angled which is not equilateral (c) obtuse angled (d) right angled

In ABC with usual notations, if r=1,r_1=7 and R=3, the ABC is (a) equilateral (b) acute angled which is not equilateral (c)obtuse angled (d) right angled

In ABC with usual notations, if r=1,r_1=7 and R=3, the (a) ABC is equilateral (b) acute angled which is not equilateral (c) obtuse angled (d) right angled

If one side of a triangle is double the other, and the angles on opposite sides differ by 60^(@) , then the triangle is equilateral (b) obtuse angled (c) right angled (d) acute angled

If in a triangle ABC, tanA+tanB+tanC>0 the triangle is (A) acute angled triangle (B) obtuse angled (C) right angled (D) none of these

In Delta ABC with usual notation r_1/(bc)+r_2/(ca)+r_3/(ab) is

In Delta ABC with usual notation r_1/(bc)+r_2/(ca)+r_3/(ab) is

If one side of a triangle is double the other, and the angles on opposite sides differ by 60^0, then the triangle is equilateral (b) obtuse angled (c) right angled (d) acute angled

If one side of a triangle is double the other, and the angles on opposite sides differ by 60^0, then the triangle is equilateral (b) obtuse angled (c) right angled (d) acute angled