165k views
9 votes
What is the length of side x? Round your answer to the nearest whole number.

56 centimeters
54 centimeters
55 centimeters
57 centimeters

What is the length of side x? Round your answer to the nearest whole number. 56 centimeters-example-1

1 Answer

8 votes

Answer:

x ≈ 54 cm

Explanation:

using the Cosine rule in the triangle

x² = 55² + 51² - (2 × 55 × 51 × cos61° )

= 3025 + 2601 - 5610cos61°

= 5626 - 5610cos61°

x =
√(5626-5610cos61) ≈ 54 cm ( to the nearest whole number )

User Rafael Zayas
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.