Math, asked by tanusingh33, 9 months ago

in the given triangle ABC prove that,

Attachments:

Answers

Answered by rishu6845

1

Step-by-step explanation:

(b+c)cosA+(c+a)cosB+(a+b)cosc

=b cosA+c cosA+c cosB +a cosB + a cosC + bcosc

= (bcosC+c cosB)+(acosC+c cosA) +

(a cosB + b cos A)

= a + b + c

Answered by sonabrainly

1

Answer:

Step-by-step explanation:

bcosC+c cosB)+(acosC+c cosA) +

(a cosB + b cos A)

a + b + c

Previous Question

Next Question

Similar questions

Political Science, 5 months ago

easy on nation in punjabi language for 5th class...

English, 5 months ago

Find the missing consonant E_ _ i _ e...

Math, 5 months ago

find the square root of 225 by the method of repeated subtraction ...

History, 9 months ago

What were the goals of the Radical Republicans? Check all that apply. to extend pardons to most Southern whites and former officers to provide greater equality for African Americans to get the states that had rebelled back in the Union as quickly as possible to punish Southern states for secession to have Congress, not the president, establish the guidelines for Reconstruction...

English, 9 months ago

Write the summary of the portrait of a lady in about 200 words...

Computer Science, 11 months ago

An XML component that defines the structure of a document is known as a(n): A.DOCTYPE B.DTD C.#PCDATA D.HTML Stylesheet...

Computer Science, 11 months ago

With XML: A.views are not limited to one multi-valued path only. B.documents can automatically be generated from database data only. C.database data can automatically be extracted from XML documents only. D.With XML, all of the above are true.

Computer Science, 11 months ago

To eliminate definition duplication, XML Schemas define: A.An intersection table. B.Global elements. C.A normalized definition table. D.None of the above is correct.