Register
In ΔABC, a = 6.9 inches, b = 2.8 inches and ∠C=7°. Find the length of c, to the nearest 10th of an inch.
64.9k views
1 vote
In ΔABC, a = 6.9 inches, b = 2.8 inches and ∠C=7°. Find the length of c, to the nearest 10th of an inch.

User Jashandeep Sohi
by
9.3k points

1 Answer

5 votes
use law of consine, c²=a²+b²-2abcosC=6.9²+2.8²-2*6.9*2.8cos7
use your calculator: c≈4.1
please use your calculator to double check my answer.
User Pmagunia
by
8.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!