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Answer:
KL ≈ 5.3
Step-by-step explanation:
JL/JM = tan(51°) ⇒ JL = JM×tan(51°)
KL/JL = cos(72°) ⇒ KL = JL×cos(72°) = JM×tan(51°)×cos(72°)
KL = 14·tan(51°)·cos(72°) ≈ 5.3