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Help please, show work!!:)
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Help please, show work!!:)

Help please, show work!!:)-example-1
User Mmla
by
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1 Answer

7 votes

Answer:

JL ≈ 3.1

Explanation:

Using the cosine rule

with JL = k , JK = l , KL = j , then

k² = j² + l² - (2jlcosK )

= 6² + 8² - ( 2 × 6 × 8 × cos20° )

= 36 + 64 - (96cos20°)

= 100 - 96cos20° ( take square root of both sides )

k =
√(100-(96cos20)) ≈ 3.1 ( to the nearest tenth )

that is JL ≈ 3.1

User BevynQ
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