Question

a coso+b sino=m
a sino-b coso=n
find m^2+n^2​

Answer 1

Answer:

acoso+bsino=m

a×1+b×0=m

a=m

and

asino-bcoso=n

a×0-b×1=n

-b=n

now

m^2+n^2=(a)^2+(-b)^2

=a^2+b^2Ans