[" 9f "a cos theta+b sin theta=m" qrd "q sin theta-b cos theta=n],[" rusion that "m^(2)+n^(2)=a^(2)+b^(2)]

If a cos theta+b sin theta=m and a sin theta-b cos theta=n, Prove that a^(2)+b^(2)=m^(2)+n^(2)

If a cos theta+b sin theta=m and a sin theta-b cos theta=n, prove that a^(2)+b^(2)=m^(2)+n^(2)

If x=a cos theta-b sin theta and y=a sin theta+b cos theta then prove that :x^(2)+y^(2)=a^(2)+b^(2)

If a cos theat + b sin theta = m and a sin theta- b cos theta = n, then prove that a^2 + b^2 = m^2 + n^2

If a cos theta+b sin theta=m and a sin theta-b cos theta=n, then a^(2)+b^(2)=m^(2)-n^(2)(b)m^(2)n^(2)(c)n^(2)-m^(2)(d)m^(2)+n^(2)

If x = a cos theta - b sin theta and y = a sin theta + b cos theta, prove that x^2 + y^2 = a^2 + b^2.

If x=a sin theta+b cos theta and y=a cos theta -b sin theta, " prove that " x^(2)+y^(2)=a^(2)+b^(2).

If a cos theta + b sin theta = c " then " (a sin theta - b cos theta )^(2) =

If a cos theta + b sin theta =4 and a sin theta- b cos theta = 3 " then" a^(2) + b^(2) is equal to