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Lisa [10]
3 years ago
15

Help me! I need a better explanation!

Mathematics
1 answer:
jonny [76]3 years ago
6 0
1) Those are polar coordinates

2) The expression inside cosine is the angle of the vector to be drawn

3) r is the length of the vector to be drawn.

For example:

- if you take angle =0 and r results to be =2, it means that you have to put a point over the x-axis at a distance of two units from the origin.

4) You have to look for notable values, like points on the axis and notable angles (0, 45°, 90°, 180 °,...)

5) Use derivation to find maximum and minimum values. 

6) The graph of this function looks like the infinite symbol: ∞

7) Some notable points are: (0,0) ; (0,2) ; (0, - 2)

See attached the complete graph as a reference.




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Does anyone know the answer?I am stuck? Please explain it to me!
9966 [12]
We are given the length of AC and AB to be 20 and 6, respectively, so we can subtract 6 from 20 to find BC to be 14 cm.

The circumference of a circle is equal to 2 \pi r

C=2 \pi (14) = 28 \pi

The answer is approximately 87.96 cm
7 0
2 years ago
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HELP ME PLEASE ASAP!!
timama [110]

Answer:

8

Step-by-step explanation:


8 0
2 years ago
Plz tell me the aswer and how you worked it out. A tree grows to a height of 13.75m over 5 1/2 years. What is the average annual
marin [14]
1. Take your 13.75 and 5 1/2 and put it into a dividing table 
           _______
     5.5 I13.75               

                              you need to get your decimal out of deviser (5.5) will now be (55) because you moved the decimal over there you also need to move the decimal that is on the inside to and it will be (137.5)

2. When you divide you would get 2.5 

3. Now you would know how much the tree grew over the 5 1/2 years.

ANSWER:  2.5m a year!

Hope this helped! 

:)
4 0
3 years ago
2.54rounded to nearest tenth
Svetradugi [14.3K]
2.5 Is the answer. It is rounded to the nearest tenth.
6 0
3 years ago
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I need help ASAP................
Romashka [77]

Answer:

8

Step-by-step explanation:

3 0
2 years ago
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