In `Delta ABC,` if `(b-c)/(b+c)cot((A)/(2))+(b+c)/(b-c)tan((A)/(2))=2,` then `Delta ABC` is (A) Right angled (B) Acute angled (C) Equilateral (D) Obtuse angled

In any triangle ABC if 2cos B=(a)/(c), then the triangle is(A) Right angled (C) Isosceles (B) Equilateral (D) None of these

In a triangle ABC, if (a+b+c)(a+b-c)(b+c-a)(c+a-b)=(8a^2b^2c^2)/(a^2+b^2+c^2) then the triangle is (a)isosceles " " (b)right angled " " (c)equilateral " " (d)obtuse angled

If in a hat harr ABC,(cos A)/(a)=(cos B)/(b)=(cos C)/(c), then the triangle is: a.right angle b.isosceles angle c. equilateral angle d.obtuse angle

In a Delta ABC cos3A+cos3B+cos3C=1 then a) Delta ABC is right angled b) Delta ABC is acute anled c Delta ABC is obstuse angled

if in triangle ABC right angled at C then tan A+tan B

If sin A=sin^(2)Band2cos^(2)A=3cos^(2)B then the triangle ABC is right angled (b) obtuse angled (c)isosceles (d) equilateral

In an acute angled triangle ABC,if (tan A)/(2)=(tan B)/(3)=(tan C)/(5) then /_ABC is equal to

If sinA=sin^2Band2cos^2A=3cos^2B then the triangle ABC is right angled (b) obtuse angled (c)isosceles (d) equilateral

If sinA=sin^2Ba n d2cos^2A=3cos^2B then the triangle A B C is right angled (b) obtuse angled (c)isosceles (d) equilateral

If sinA=sin^2Ba n d2cos^2A=3cos^2B then the triangle A B C is right angled (b) obtuse angled (c)isosceles (d) equilateral