https://www.askiitians.com/forums/Trigonometry/if-cos-2-x-1-cos-2-x-1-tan-2-y-3-sin3-z-4_186929.htm
if (cos^2 x +1/(cos^2 x))(1+tan^2 y)(3+sin3 z)=4; then y can take val - askIITians
if (cos^2 x +1/(cos^2 x))(1+tan^2 y)(3+sin3 z)=4; then y can take values equal to Dear studentmore conditions are required to answer