What is the length of side x? Round your answer to the nearest whole number.
1 answer:
Answer:
x ≈ 54 cm
Step-by-step explanation:
using the Cosine rule in the triangle
x² = 55² + 51² - (2 × 55 × 51 × cos61° )
= 3025 + 2601 - 5610cos61°
= 5626 - 5610cos61°
x =
≈ 54 cm ( to the nearest whole number )
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