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Using the cosine rule, work out the length a. Give your answer to 1 d.p.​

Using the cosine rule, work out the length a. Give your answer to 1 d.p.​
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5 votes
Using the cosine rule, work out the length a. Give your answer to 1 d.p.​

Using the cosine rule, work out the length a. Give your answer to 1 d.p.​-example-1
User Cogle
by
7.7k points

1 Answer

7 votes

Answer:

11.1 m

Explanation:


a^2=13^2+8^2-2(13)(8)cos58^o


=169+64-110.24


a=√(122.76)


=11.1\ m

User Roger C S Wernersson
by
8.2k points
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