a:b=c:d हो तो k नियम द्वारा सिद्ध कीजिए कि a2/b2+c2/d2=ac/bd
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Step-by-step explanation:
a:b=c:d=k
or,a=bk,c=dk
L.H.S=a2/b2+c2/d2
=b2k2/b2+d2k2/d2
=k2+k2
=2k2
R.H.S=ac/bd
=bk×dk/bd
=k2
as,both are constant quantities
L.H.S=R.H.S(proved)
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