Question

please answer urgent​

Answer 1

Answer:

As Lm//Cb

so Am/mb = al//lc. ......1

and as ln//cd

so

An/nd = al/ac.............2

from 1 and 2 we get

an/nd = am/mb

plus 1 both side

an/nd + 1 = am/mb + 1

reciprocal it

(an+nd) / an = (am+md) / am

ab / an = ad / am

after cross multiplication we get

AM/AB = AN/AD