219k views
0 votes
1 Calculate each of the sides or angles marked with a letter. (cosine rule)

1 Calculate each of the sides or angles marked with a letter. (cosine rule)-example-1
User BigZ
by
7.7k points

1 Answer

4 votes

So cosine formula: a²= b²+c²-2bc × cos.A

so we doing A. x=5²+8²-2(5)(8) cos[58]

x= 46.60

hope this helps

User Srgstm
by
8.6k points

No related questions found

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

9.4m questions

12.2m answers

Categories