Answer:
This a vector addition problem and you need to know the law of cosines and law of sines to solve this problem.
Two vector forces of 80lbs and 70 lbs act on an object at 40 degree angle between them.
The magnitude of the resultant force can be found by applying the law of cosines:
c2 = a2 + b2 - 2abcos140°
where a = 80, b = 70 and c is the resultant force vector you are asked to find
Once you find the magnitude of the resultant force, then you can find the angle it makes wrt the 70lb force using the law of sines:
sinα/a = sin140°/c
where α is the angle opposite side a, or the angle between the resultant and the 70lb vector that you are asked to find. so it would be 140lbs
Step-by-step explanation
The correct answer is i think
Answer:
B
12x = 216
x = 18 boxes
Pls mark brainliest :)
Step-by-step explanation:
Answer:
15 km
Step-by-step explanation:
We can use the Pythagorean theorem to solve
a^2 + b^2 = c^2
Draw a triangle with 12 for x direction and 9 for y direction
The distance is the connecting line which is the hypotenuse
12^2 + 9^2 = c^2
144+81 = c^2
225 = c^2
Taking the square root of each side
sqrt(225) = sqrt(c^2)
15 =c
Answer:
True
Step-by-step explanation:
In parallel lines alternate interior angles are equal
