Properties of triangle, math, Marketing Management

properties of triangles.

in the following problem,
In a triangle ABC,if r1 is the exradius of the excircle opposite to A,r2 is the exradius of the excircle opposite to B and r3is the exradius of the excircle opposite to C....
prove that (ar1+br2+cr3)/abc=(1/r)-(1/2R)
where r is the inradius and R is the circum radius.
i tried using these formulae:
r1=(area of triangle)/(s-a)
r1=stanA/2
but i cudnt solve it.how should i start?

Related Discussions:- Properties of triangle, math

Explain the various elements of the marketing process, A Convertible Ultrab...

A Convertible Ultrabook is a new type of notebook which functions both as a laptop and tablet mode when required. Ultrabooks are designed to feature reduced bulk without compromisi

College algebra, Sam has grades of 96,88,86, and 92 on his first four exams...

Sam has grades of 96,88,86, and 92 on his first four exams. What score does he need on his final exam to have an average of at least 90?

Financial crunch involved in tourism to reshape, discuss the strategies inc...

discuss the strategies including digital strategies that you would recommend to a business to mitigate the effect of this crisis

Types of marketing information system, Types of Marketing Information Syste...

Types of Marketing Information System: the information needs of the marketing job are large and diverse. It is not easy to classify that information into a few types: 1. Class

Determine the importance of product - marketing mix, Determine the importan...

Determine the importance of Product - Marketing mix Product refers to goods and services offered by the organisation. A pair of shoes, a burger, a lipstick, all are product

The simplex method , a firm 3 different types of mobile phone & clasificati...

a firm 3 different types of mobile phone & clasification as S,N & S. the 3types have production requirements given by the following table. S N S cos

#tASSIGNMENT.., E BUSINESS..

E BUSINESS..

Explain in brief about relational communications, Explain in brief about Re...

Explain in brief about Relational Communications Orientation Explanation Information and promotion Communications ar

Idea screening - new product development, Idea Screening In the new-pro...

Idea Screening In the new-product development process, the second step is idea screening which involves screening new manufacture ideas to spot good ideas and discard poor ones

Ad-effectiveness using a communication objective, Ad-effectiveness using a ...

Ad-effectiveness using a communication Objective is not sufficient in Itself: - Some advertisement may perhaps achieve communication objectives however may not promote sales. Some

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages