Question

y {xcos(y/x)+ysin(y/x)}dx-x{ysin(y/x)-xcos(y/x)}dy=0 solve

​

Answer 1

Answer:

in triangle BAC and QPR

Ange A =angle P

Angle B=angle Q

by AA similarly

triangle BAC~triangle QPR

6/h=4/28

6X28=h

h=42cm.

Step-by-step explanation:

????