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White raven [17]
3 years ago
7

I need to find length of MK​

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

Use the cosine rule

Step-by-step explanation:

1. Apply formula of c^2 = a^2 + b^2 - 2abcosC

2. Substitute known values in: c^2 = 36 + 4900 - 840cos120

3. Apply algebra and use the calculator

4. Final answer is 73.18 (2 decimal places)

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