science class 10 electricity
if cos alpha/cos beta = m and cos alpha/sin beta = n then show that (m^2+n^2) cos^2 beta = n^2
determine order and degree (if defined) ofthe(ym)2+(yn)2+(y')+y5=0
SIR RETURN KAA REBATE KESE MILTA HAI
Can you explain to me about question no 7