If n is an integer, then cos(n(2<span>π))=1.
Take n=0, cos(2</span>π)=cos(0)=1, n=1, cos(2π)=1, n=2, cos(2(2π))=cos(4<span>π)=cos(0)=1...
If n is not an integer, well, ..... we don't know the value, which depends on the value of n.</span>
So in the problem, the length of the chord there is the circumference of the tree. So in order to get the diameter of the tree, we must use the formula in getting the circumference of a circle that is stated as follows.
C = 2pi *Radius
so first we need the get the radius of the tree which represent by this formula:
Radius = C /2pi = 8/6.2832 = 1.2732 ft
Diameter = 2*radius = 2 * 1.27 32 = 2.5465 feet
In summary, the diameter of the tree is 2.565 feet.
Answer:
you spend 5 hrs. first you have to substract 45 from 120 because it is a default charge. 120-45 = 75. if you divide 75 by 15 you get 5 hrs. because it 15$ per hour.
Since the workouts are normally on hour scale, thus the first comparison of $9.00 per hour of childcare is more appropriate here.
<h2>Given that:</h2>
- Gym A charges $9.00 per hour of childcare.
- Gym B charges $0.75 per 5 minutes of childcare
<h2>How to find which scale is appropriate when?</h2>
Firstly try to find what is the usual scale used for that work.
The usual scale used for given specified work is mostly the appropriate scale.
For Gym case, people are not coming and going in minutes scale, but they count in hours and will be able to comprehend the hour scale better.
Both Gym although offer same price (since $0.75 per minute is equal to $9.00 per hour), but the cost Gym A specifies is more easy to understand for normal public, thus it is more appropriate scale.
Learn more about comparison here:
brainly.com/question/16781152
