Basic rule is that:(adsbygoogle = window.adsbygoogle || []).push({});

a/b=c/d then, a+b/a-b = c+d/c-d

but suppose if we apply "componendo dividendo" just to the RHS TWICE, we get the original number... consider the example : 16/4 (which we know is equal to 4 or rather 4/1)

now applying componendo dividendo just once to 16/4 ,

we get 20/12 , then again applying componendo dividendo to

20/12 , we get 32/8 ,which is equal to 4/1 or 4.

but i know this is not even componendo -dividendo theorem,

but when we apply it twice to the RHS v get back the RHS......

this was quite useful when solving a trigonometry problem....but according to the teachers there is no such theory.......so, not very useful.

so, the question is ,what is it that you find wrong with this "theory" i used.(if any,specify)......??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Basic rule is that: a/b=c/d then, a+b/a-b = c+d/c-dbut suppose

**Physics Forums | Science Articles, Homework Help, Discussion**