Properties of triangle, math, Marketing Management

Assignment Help:

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

Working of first barrier of exchange in intermediaries, Define the working ...

Define the working of first barrier of exchange in intermediaries. The primary barrier for smooth exchange results by the fact which sources of supply and centres for demand ar

Brand personality, brand personality of MacDonald

brand personality of MacDonald

Explain the discrepancy of assortment and sorting, Explain the Discrepancy ...

Explain the Discrepancy of Assortment and Sorting. Discrepancy of Assortment and Sorting: Channel intermediaries occur to adjust the discrepancy of assortment from the pe

Explain about marketing communication, Q. Explain about Marketing communica...

Q. Explain about Marketing communication? Marketing communication: - Is the procedure in which two or more persons consciously or unconsciously attempt to influence each othe

What are suppliers firms and resellers in microenvironment, What are Suppli...

What are Suppliers Firms and Resellers in the Microenvironment of a company? Suppliers: Suppliers Firms and individuals which provide the resources required by the company

# is a science for the management of a valu, marketing is a science for th...

marketing is a science for the management of a value delivery system

Why ''supply'' has been more significant than ''purchasing'', Explain why '...

Explain why 'Supply' has been described as being more significant than 'Purchasing' for an organisation. Purchasing Purchasing deals with the day-to-day buying of goods.

What is personal selling, What is Personal Selling Personal selling is...

What is Personal Selling Personal selling is traditionally perceived as an interpersonal communication tool which involves face-to-face activities undertaken by individuals, f

Effect of materialism in ads, Q. Effect of Materialism in Ads? Advertis...

Q. Effect of Materialism in Ads? Advertising makes people purchase the things which they don't need. Advertising unnecessarily append status/prestige/ pride symbol with some pr

Produce marketing objectives for mcdonald, Over the past couple of decades,...

Over the past couple of decades, there have been significant changes in the quick service restaurant industry in Mauritius. The fast food landscape is made up of different formats

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages