The sides of a triangle are `x^2+x+1,2x+1,a n dx^2-1` . Prove that the greatest angle is `120^0dot`

The sides of a triangle ABC are (x^(2) + x +1),(2x+1) and (x^(2)-1) . Find the greatest angle of the triangle.

if the lengths of sides of a triangle be 1-2x, (x^2-x+1 and (x^2-1) then show that the greatest angle of the triangle is 120^@

The sides of a triangle are x^2+3x+3,2x+3,x^2+2x . Find the greatest angle of the triangle.

If the measures of the sides of triangle are (x^2 - 1), (x^2 + 1) and 2x cm, then the triangle would be___

The equations of two sides of a triangle are 3x-2y+6=0\ a n d\ 4x+5y-20\ a n d\ the orthocentre is (1,1). Find the equation of the third side.

If in a triangle the angles are in the ratio as 1:2:3 , prove that the corresponding sides are 1:sqrt(3): 2.

Evaluate: int_0^2[x^2-x+1]dx ,w h e r e[dot] denotos the greatest integer function.

Evaluate: int_(-5)^5x^2[x+1/2]dx(w h e r e[dot] denotes the greatest integer function).

The first three terms in the expansion of (1+a x)^n(n!=0) are 1,6x and 16 x^2dot Then find the value of a and ndot

Which of the following function is/are periodic? A. f(x)={1,0,x is rationalx is irrational B. f(x)={x−[x],12,2n≤x<2n+12n+1≤x<2n+2 where [.] denotes the greatest integer function n∈Z C. f(x)=(−1)[2xπ, where [.] denotes the greatest integer function D. f(x)=x−[x+3]+tan(πx2), where [.] denotes the greatest integer function, and a is a rational number