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bezimeni [28]
3 years ago
13

Find BC the length not the angleRound to the nearest tenth.

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
4 0

Answer:

14.4

Step-by-step explanation:

We solve the above question using Cosine Rule

The formula is given as:

BC² = AB²+ AC²﹣2 × AB × AC cos A

BC² = 6² + 13²﹣2 × 6 × 13 × cos(91°)

BC = √6² + 13²﹣2 × 6 × 13 × cos(91°)

BC = 14.41258

Approximately

BC = 14.4

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