[" 28."sqrt(2+sqrt(2)+2cos4 theta)=.........+...],[[" (A) "cos theta," (B) "sin theta," (C) "2cos theta," (D) "2sin theta]]

sqrt(2+sqrt(2+2cos4theta))=

sqrt(2+sqrt(2+2cos4theta))= …………

sqrt(2+sqrt(2+sqrt(2+2 cos 8 theta)))=

If sqrt(3) cos theta + sin theta = sqrt(2) , then theta =

If tan theta=(sin alpha- cos alpha)/(sin alpha+cos alpha) , then sin alpha+cos alpha =.................... A) sqrt2 cos, theta sqrt2 sintheta B) -sqrt2 sin theta, -sqrt2 cos theta C) sqrt2 sin theta , sqrt2 sin theta D) sqrt2 cos theta , - sqrt2 cos theta

If cos theta + sin theta = sqrt(2) cos theta then S.T cos theta - sin theta = sqrt(2) sin theta

If cos theta + sin theta = sqrt(2) cos theta , show that cos theta - sin theta = sqrt(2) sin theta .

Show that sqrt(2+sqrt(2 +2 cos 4 theta))= 2 cos theta