1) Solve for Side A
2) Solve for Angle B
2 answers:
Answer:
solution given;
let
AB=a
AC=b=30ft
AB=c=20ft
<A=115°
By using Cosine rule.
a²=b²+c²-2bc cos angle
a²=30²+20²-2*30*20 Cos 115°
a²=1807.1419
a=√[1807.1419]
a=42.51
Side A is 42.51ft.
Again
Cos B=
Cos B=
Cos B=0.7687
<B=Cos -¹(0.7687)
<B=39.46°
Angle B is 39.46
You might be interested in
Answer:
I believe the answer is <em>C</em>
Step-by-step explanation:
C=2π√150 ft
Or, C≈76.95 ft
Comment if you want to see how I did this.
40 * 7.85 = 314
32.24 + 24.02 + 24.53 = 80.79
314 - 80.79 = 233.21
Answer is D
Answer:
(From left-right)
-10, 8
-8, 7
-6, 6
-4, 5
-2, 4
0, 3
2, 2
4, 1
6, 0
8, -1
9, -2
Step-by-step explanation:
Answer:
B
Step-by-step explanation: