Occurs in an experiment when you are not able to distinguish among the effects of different factors.
Complete question is;
A 21 ft ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of elevation is?
Answer:
θ = 70.5°
Step-by-step explanation:
The angle of elevation simply means the angle that the ladder makes with the ground. Let's call this angle θ.
I've attached a diagram showing the triangle made by this ladder and the wall.
From the attached diagram, we can see the triangle formed by the ladder and the wall.
We can find the angle of elevation θ from trigonometric ratios.
Thus;
7/21 = cos θ
cos θ = 0.3333
θ = cos^(-1) 0.3333
θ = 70.5°
Answer:
Table c mate
Step-by-step explanation:
9514 1404 393
Answer:
-2/5
Step-by-step explanation:
The slopes of parallel lines are the same. The slope of the given line is -2/5, the coefficient of x.
The slope of a parallel line is -2/5.
Answer:
E
Step-by-step explanation: