Prove that ar= 3/7 ac of parallelogram , Mathematics

Assignment Help:

ABCD is a parallelogram in the given figure, AB is divided at P and CD and Q so that AP:PB=3:2 and CQ:QD=4:1. If PQ meets AC at R, prove that AR= 3/7 AC.

311_rectangle2.png

Ans:    ΔAPR ∼ ΔCQR (AA)

⇒  AP/CQ = PR/QR = AR/CR

⇒  AP/CQ = AR /CR   & AP= 3/5 AB

⇒ 3 AB/5C = AR/ CR & CQ= 4/5 CD = 4/5  AB

⇒  AR/CR = 3/4

⇒ CR/AR = 4/3

CR + AR/AR = 4 +1/3

⇒ AC/AR = 7/3

⇒ AR = 3/7 AC

Hence proved


Related Discussions:- Prove that ar= 3/7 ac of parallelogram

Factoring quadratic polynomials, Primary, note that quadratic is another te...

Primary, note that quadratic is another term for second degree polynomial. Thus we know that the largest exponent into a quadratic polynomial will be a2. In these problems we will

Calculate the area of the skirt to the nearest foot, Pat is making a Christ...

Pat is making a Christmas tree skirt. She needs to know how much fabric to buy. Using the example provided, calculate the area of the skirt to the nearest foot. a. 37.7 ft 2

World Problems on simultaneous equations, A particular algebra text has a t...

A particular algebra text has a total of 1382 pages which is broken up into two parts. the second part of book has 64 more pages than first part. How many pages are in each part of

Matlab, how i found largest cluster in percolation

how i found largest cluster in percolation

Integration, Integration of square root of sin

Integration of square root of sin

Standardizing a random variable, Standardizing a Random Variable       ...

Standardizing a Random Variable       If X is a random variable with E(X) = m and V(X) = s 2 , then Y = (X – m)/ s is a random variable with mean 0 and standard deviatio

Fractions, what the answer to 1/4+1/3=3/12=?

what the answer to 1/4+1/3=3/12=?

Project, report on shares and dovidend using newspaer

report on shares and dovidend using newspaer

Word problems, Ana has hiked 4 1/2 miles. She is 2/3 of the way along the t...

Ana has hiked 4 1/2 miles. She is 2/3 of the way along the trail. How long is the trail?

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