For `a in R^+` such that `lim_(x rarr 0) (1-cosax)/x^2=lim_(x rarr pi) sinx/(pi-x)` then `a=`

For a in R^(+) such that lim_(x rarr0)(1-cos ax)/(x^(2))=lim_(x rarr pi)(sin x)/(pi-x) then the value of a is

lim_(x rarr0)(sin x)/(pi-x)

lim_(x rarr0)(1-cos x)/(x^(2))

lim_(x rarr0)(cos x)/(pi-x)

lim_(x rarr0)(cos x)^(1/x^(2))

lim_(x rarr 0) sin(pi cos^2x)/x^2=

lim_(x rarr 0) (1- cos x)/(x^(2)) is :

lim_(x rarr0)(1-cos x^(@))/(x^(2))

lim_(x rarr0)(sinx(1-cos x))/x^(3)

lim_(x rarr 0) (|x|)/x is :