Triangles, Mathematics

Assignment Help:

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


Related Discussions:- Triangles

Estimate what percent of decrease for population, The population of Hamden ...

The population of Hamden was 350,000 in 1990. By 2000, the population had decreased to 329,000. What percent of decrease is this? First, ?nd out the number of residents who lef

20 MARK QUESTION, Let E; F be 2 points in the plane, EF has length 1, and l...

Let E; F be 2 points in the plane, EF has length 1, and let N be a continuous curve from E to F. A chord of N is a straight line joining 2 points on N. Prove if 0 Prove that N ha

Some simple equation, divide 50 into two parts such that if 6 is subtracted...

divide 50 into two parts such that if 6 is subtracted from one part and 12 is added to the second part,we get the same number?

Prove that the poset has a unique least element, Prove that the Poset has a...

Prove that the Poset has a unique least element Prove that if (A, ) has a least element, then (A,≤)  has a unique least element. Ans: Let (A, ≤) be a poset. Suppose the po

Rational exponents, Now we have to start looking at more complicated expone...

Now we have to start looking at more complicated exponents. In this section we are going to be evaluating rational exponents. i.e. exponents in the form

What is the surface area of a ball with a diameter of 6 inch, The formula f...

The formula for the surface area of a sphere is 4πr 2 . What is the surface area of a ball with a diameter of 6 inches? Round to the nearest inch. (π = 3.14) If the diameter  o

Quantitative, A lobster catcher spends $12 500 per month to maintain a lobs...

A lobster catcher spends $12 500 per month to maintain a lobster boat. He plans to catch an average of 20 days per month during lobster season. For each day, he must allow approx

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd