Factor completely.

x8 - 1/81

answers are
(x 4 - )(x 2 + )(x 2 - )

(x 4 + )(x 2 - ) 2

(x 4 + )(x 2 + )(x 2 - )

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

read more on -

l.jnl.j/n.m,lm,

step-by-step explanation: