An outdoor staircase has a total vertical elevation of 17.5 feet from the road level to the first floor. The 1st floor to the 2n
d floor is also 17.5 feet. If the angle of elevation is 32.47 degrees and the landing of each step is 11 inches, answer the following questions showing each step of your work:
a) What is the vertical rise per step (in inches, rounded to the nearest inch)?
b) Find the number of steps needed to climb from road level to the 2nd floor.
a) What is the vertical rise per step (in inches, rounded to the nearest inch)?
b) Find the number of steps needed to climb from road level to the 2nd floor.
1 answer:
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Using it's concept, it is found that the domain for the expressions is, respectively, given by:
It is the <u>set that contains all possible input values</u>.
In a fraction, the denominator cannot be zero, hence:
- The domain of the first two expressions is of
.
- The domain of the last expression is of
.
The third expression can be simplified, as:
(x + 5)/(x + 5) = 1.
The same is true for the fourth, as:
x²/x = 1.
Neither has any restriction, hence their domain is all real numbers, represented by .
More can be learned about the domain of a function at brainly.com/question/25897115
The measure of angle ∠ACB is 70°. Then the correct option is C.
<h3>What is the triangle?</h3>A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
∠ABC + ∠BCA + ∠CAB = 180°
60° + ∠BCA + 50° = 180°
∠BCA = 180° – 110°
∠BCA = 70°
Then the correct option is C.
The complete question is given below.
Use the diagram showing m || n, as well as the relationships between interior and exterior angles of ΔABC, to answer the questions.
The measure of ABC is 60
The measure of BAC is 50
The measure of ACB will be
a. 50
b. 60
c. 70
d. 120
More about the triangle link is given below.
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