[" 13."lim_(x rarr(pi)/(2))((1-sin x)(8x^(3)-pi^(3))cos x)/((pi-2x)^(4))],[" 1) "-(pi^(2))/(16)quad " 2) "(3 pi^(2))/(16)]

lim_(xrarr(pi)/(2)) ((1-sinx)(8x^(3)-pi^(3))(cosx))/(pi-2x)^(4)

lim_(xrarr(pi)/(2)) ((1-sinx)(8x^(3)-pi^(3)))/(pi-2x)^(4)

lim_(x rarr(pi)/(2))((1-sin x)(8x^(3)-pi^(3))cos x)/((pi-2x)^(4))-(pi^(2))/(6) b.(3 pi^(2))/(16) c.(pi^(2))/(16)d .-(3 pi^(2))/(16)

(lim)_(xvecpi/2)((1-s in x)(8x^3-pi^3)cos x)/((pi-2x)^4) (pi^2)/6 b. (3pi^2)/(16) c. (pi^2)/(16) d. -(3pi^2)/(16)

(lim)_(xvecpi/2)((1-sin x)(8x^3-pi^3)cos x)/((pi-2x)^4) a. (pi^2)/6 b. (3pi^2)/(16) c. (pi^2)/(16) d. -(3pi^2)/(16)

Lim_(x rarr(pi)/(2))(cos x)^(((pi)/(2)-x))

lim_ (x rarr (pi) / (2)) (sin2x) / (cos x)

lim_ (x rarr (pi) / (2)) - (1-sin ^ (3) x) / (3cos ^ (2) x)

lim_ (x rarr (pi) / (2)) (1-sin ^ (3) x) / (cos ^ (2) x)

lim_ (x rarr (pi) / (2)) (1-sin x) / (((pi) / (2) -x) cot x)