Register
Can it figure how to do this cosine out
143k views
3 votes
Can it figure how to do this cosine out

Can it figure how to do this cosine out-example-1
User Mikel F
by
6.3k points

1 Answer

2 votes

Answer:

BC= 14.6

Explanation:

The law of cosines tells you ...

BC² = AB² +AC² -2·AB·AC·cos(A)

BC² = 9² +12² -2·9·12·cos(87°) ≈ 213.695

BC ≈√213.695 ≈ 14.6

The length of BC is about 14.6 units.

User Tomi Lammi
by
5.2k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.0m questions

7.8m answers

Other Questions

Solve for y in terms of x. 2/3y - 4 = x y = x + 6 y = -x + 4 y = -x + 6 y = x + 4
Aliyah has $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
Ten gallons of paint were poured into two containers of different sizes. Use one variable to express the amount poured into each container
Evaluate a + b when a = –16.2 and b = –11.4 A. –27.6 B. –4.8 C. 4.8 D. 27.6
What is the value of x? (-4) - x = 5
Link Copied!