If `(cosalpha)/(cosbeta)=m` and `(cosalpha)/(sinbeta)=n` show that `(m^2+n^2)cos^2beta=n^2`

If (cos alpha)/(cos beta)=m and (cos alpha)/(sin beta)=n show that (m^(2)+n^(2))cos^(2)beta=n^(2)

If cosalpha/cosbeta=m and cosalpha/sinbeta=n then Show that (m^2+n^2) cos^2beta=n^2 .

If (cosalpha)/(cosbeta)=m and (cosalpha)/(sinbeta)=n then prove that (m^(2)+n^(2))cos^(2)beta=n^(2) .

If (cosalpha)/(cosbeta)=m and (cosalpha)/(sinbeta)=n , find (m^(2)+n^(2))cos^(2)beta

(cosalpha)/(cosbeta)=n and (sinalpha)/(sinbeta)=m , find (m^(2)-n^(2))sin^(2)beta

If (cosalpha)/(sinbeta)=n and (cosalpha)/(cosbeta)=m , then find cos^(2)beta ?

If (cosalpha)/(cosbeta) = a and (sinalpha)/(sinbeta) = b , then the value of sin^2 beta interms of a and b is____

If cosalpha+cosbeta=1/2a n dsinalpha+sinbeta=1/3,t h e n

(cosalpha+cosbeta)^2+(sinalpha+sinbeta)^2 =

If cosalpha+cosbeta=1/3 and sinalpha+sinbeta=1/4 ,show that tan ((alpha+beta)/2)=3/4