Triangles, Mathematics

The sides of a triangle are x^(2 )+x+1, 2x+1,x^2-1, prove that the
largest angle is 120 degrees, and find range of x.

Ans) The biggest side is x^(2) + x + 1

so findout the angle opposite to that by

Cos(A) = (b^2 + c^2-a^2)/2*b*c

which gives Cos(A) = -1/2 ie 120degress

Posted Date: 3/8/2013 7:18:54 AM | Location : United States







Related Discussions:- Triangles, Assignment Help, Ask Question on Triangles, Get Answer, Expert's Help, Triangles Discussions

Write discussion on Triangles
Your posts are moderated
Related Questions
Let R be the relation on Z + defined by aRb iff gcd(a; b) = 1 (that is, a and b have no common divisors greater than one). Explain whether R is reflexive, irreflexive, symmetri

what are the applications of de moiver''s theorem in programming and software engineering

The mode Merits i.  This can be determined from incomplete data given the observations along with the highest frequency are already known ii.  The mode has some applic


Mathematical Formulae (a + b) 2 = a 2 + b 2 + 2ab (a - b) 2 = a 2 + b 2 - 2ab (a + b) 2 +

Three Dimensional Spaces In this section we will start taking a much more detailed look at 3-D space or R 3 ).  This is a major topic for mathematics as a good portion of Calc

The number of integral pairs (x,y) satisfying the equation x^2=y^2+1294 is a)2 b)3 c)4 d)None of these


Describe about Arithmetic and Geometric Series? When the terms of a sequence are added together instead of separated by commas, the sequence becomes a series. You will use seri

HOW DO WE CAN SOLVE SIMPLIFY?