Answer:
A = 38°
Step-by-step explanation:
We are going to use cosine law to find angle A where
a = 4.7
b = 3.9 m
c = 2.9 m
or
cos A = [(4.7)^2 + (3.9)^2 - (2.9)^2]/2(4.7)(3.9)
= 28.89/36.66
= 0.788
A = arccos(0.788) = 38°
X- 3.5 = 5.25
X = 8.75 (Add 3.5 to both sides)
If you'd like further explaining just comment!
1 a 2 a 3 d or c because 9times 2 =18 or 6times3=18
45° is exactly 1/8 of a full circle (45/360 = 1/8) <span>
So the length of the arc would be 1/8 of a full circumference:
C = 2π r
C = 2π(8)
C = 16π
Take 1/8 of this:
1/8C = (1/8)16π = 2π
Answer:
Exact answer --> 2π inches
(Approx. answer --> 6.28 inches)</span>
