(1+(1+a)^1/2)tanA=(1+(1-a)^1/2) then express sin4A in terms of “a”….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….…...
(1+(1+a)^1/2)tanA=(1+(1-a)^1/2) then express sin4A in terms of “a”….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….….…...











