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:
The natural logarthim of a negative is undefined.
Answer:
No
Step-by-step explanation:
People arent on brainly to do others work, they are here to help, NOT DO YOUR WORK
Resepect us more please. We stay on here just to help people. We take time out of our days to help people. So please dont make them do your work. They are here to help not be your personal servant.
Have a wonderful day! :)
Answer:
There are Five different ways.
Step-by-step explanation:
Sum: 8 Combinations 5 Probablity: 13.89%
Sum: 10 Combinations 3 Probability: 8.33%
It has to be the last one, D. I did it over 3 times to make sure.
