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°
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