Question

( Rightarrow frac{1}{sin ^{2} theta+3 sin theta cos theta+operatorname{scos}^{2} theta}=min A f(y operatorname{sivideby2}) )
( =frac{2}{2 sin ^{2} theta+6 sin theta cos theta+10 cos ^{2} theta} )
( =frac{2}{sin ^{2} theta+9 cos ^{2} theta+6 sin theta cos theta+1}=frac{2}{(sin theta+3 cos theta)^{2}+1} )
Minimum value of ( (sin theta+3 cos theta)^{2} ) is
Ans Minimum value is

# Q.2 The maximum value of the expression 1 sin0 + 3 sin cos 0+5 cos e [IIT -2010] - is

Solution