Question

Find the missing side or angle.

Round to the nearest tenth.
7
B = 20°
a=120
c=110
b=[ ? ]
Enter

Answer 1

The answer for Acellus people is b=41.1

Explanation:

Answer 2

9514 1404 393

Answer:

41.1

Explanation:

A triangle solver can do this nicely. b ≈ 41.1

__

You can use the law of cosines for the purpose.

b² = a² +c² -2ac·cos(B)

b² = 120² +110² -2(120)(110)·cos(20°) ≈ 1692.1148

b ≈ √1692.1148 ≈ 41.13532

The missing side is b ≈ 41.1 units.