Answer:
cos ∠CBD = - 4√41 / 41
Step-by-step explanation:
AB = 4 ΔABC = (4 x AC) / 2 = 10
AC = 5
BC = √5² + 4² = √41
cos ∠CBD = cos (180° - ∠CBA) = cos 180° cos ∠CBA + sin 180° sin ∠CBA
(cos 180° = - 1 sin 180° = 0 cos ∠CBA = 4 / √41 )
cos ∠CBD = (-1) x cos ∠CBA = - 4 / √41 = - 4√41 / 41
There are 132.08cm in 52 inches
Let the wire left be x yards.
Therefore, the answer of your question will be x yards.
Answer = x yards
3:8 can also be written as 3/8
12:32 can also be written as 12/32

So thus 3:8 is equivalent to 12:32
Answer:
The angle between the 190 ft. side and the 330 ft. side is 
Step-by-step explanation:
<u>The Law of Cosines</u>
When we know the value of all sides of a triangle, we can compute all of its interior angles by using the Law of Cosines, which is a generalization of the Pythagoras's theorem. If a,b, and c are the known sides of a triangle and
is the angle formed by sides a and b (opposite to c), then

We'll use the values a=190, b=330, c=280 because we want to compute the angle opposite to c





