If in triangle `ABC,a^(2)+b^(2)+c^(2)-ac-sqrt(3)ab=0` ,then triangle is necessarily.
1) isosceles
2) right angled
3) obtuse angled
4) equilateral

If in a !ABC , a^(2)+b^(2)+c^(2)=ac+sqrt3ab then the triangle is

The polar coordinates of the vertices of a triangle are (0,0),(3,(pi)/(2))(3,(pi)/(6)). Then the triangle is (b) isosceles (a) right angled (d) none of these (c) equilateral

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

The angles A, B, C of a triangle ABC satisfy 4cosAcosB + sin2A + sin2B + sin2C = 4, Then which of the following statements is/are correct? (1) The triangle ABC is right angled (2) The triangle ABC is isosceles (3) The triangle ABC is neither isosceles nor right angled (4) The triangle ABC is equilateral

In a triangle ABC,a/b=2+sqrt(3) and /_C=60^(@) then angle A and B is

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

If one angle of a triangle is equal to the sum of the other two angles,then the triangle is an isosceles triangle (b) an obtuse triangle an equilateral triangle (d) a right triangle

If sinA+sinB+sinC=(3sqrt3)/(2). then: DeltaABC is (a) isosceles (b) right angled (c) equilateral (d) obtuse angled

If : cos^(2) A + cos^(2) B + cos^(2) C = 1, "then" : Delta ABC is A)scalane B)equilateral C)isosceles D)right angled

If in a /_\ABC, sin^2A+sin^2B+sin^2C=2, then /_\ is always a an (A) isosceles triangle (B) right angled triangle (C) acute angled triangle (D) obtuse angled triangle