[" (a) If "y=10cos^(2)x-6sin x cos x+2sin^(2)x," then find the greatest "&" least value of "y" ."],[" (b) If "y=1+2sin x+3cos^(2)x" ,find the maximum & minimum values of "y AA x in R" ."],[" (e) If "y=9sec^(2)x+16csc^(2)x," find the minimum value of "y" for all permissible value of "x" ."],[" (d) If "a<=3cos(theta+(pi)/(3))+5cos theta+3<=b" ,find "b" ,where a is the minimum value "&b" is the "],[" maximum value."]