Answer:
cos0 = 6.8556546i/23 or sqrt-47/23
Step-by-step explanation:
hypotenuse is 23, opposite is 24
we have to find the adjacent using the pythagorean theorem
24^2 + b^2 = 23^2
576+b^2=529
subtract
b^2=-47
b=sqrt-47
sqrt of -47 is 6.8556546i, there is an i since it is the square root of a <em>negative</em>
cos = adjacent/hypotenuse
Answer:
1.


2.

Step-by-step explanation:
Solving (1):
Given

Required
Determine the radius and circumference
Radius is calculated as follows:



The circumference is calculated using:



Solving (2):
Given

Assume that the window is circular, the perimeter is calculated as follows:



Answer:
111.24 is the decimal notation
1.1124 x10^2 is the scientific notation
Step-by-step explanation:
Answer:
32
Step-by-step explanation:
Answer:
about 2.33 or 2
Step-by-step explanation:
7 times 1 divided by 3
7/3 =
2.33333333333