315 is the answerd for 3X105 is 105
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: A. 136
B. 8.3
C. 155
D. 27.3
Step-by-step explanation:
Gdhssse bheee
Answer:
Step-by-step explanation:
Given : Expression 
To find : Solve the expression ?
Solution :
Step 1 - Write the expression,
Step 2 - Apply distributive, 
Here, a=25.36, b=1, c=0.45
Step 3 - Solve the expression,
Therefore,
