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photoshop1234 [79]
2 years ago
7

I’m struggling with my delta math

Mathematics
1 answer:
Licemer1 [7]2 years ago
7 0

Answer:

5.8

Step-by-step explanation:

To find x use SohCahToa (sin, cos, tan). In this case, we are given the adjacent, and we are looking for the opposite of the angle. This means that tangent should be used. The equation should be set up as tan(58)=\frac{x}{3.6}. Then, to isolate the variable multiply both sides by 3.6. This means that the new equation 3.6tan(58)=x. Finally, plug this into a calculator to solve. The final answer is 5.8.

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The figure for the other questions
stira [4]
I can't really measure the angles. I can tell you what they look like they'd be. There are three reasons why not. 
1. The paper is slightly bulged where your hand is
2. The circle is slightly distorted by the camera. This  is not that critical. 
3. It is very hard to measure on a computer screen.
There is nothing you could do to make it any better. In fact, given what you had to do, this is a pretty good representation. 

The Three angles -- Question 22
Using the crudest tools you could imagine, I measured the angle where you have written two 90s between the arms as 132°. That angle opens towards the bottom of the page.

The angle that you have called 95 degrees is actually pretty close. I think you read the upper set of numbers on the protractor when you should have been reading the lower set. I make it 89, but I'll bet it is intended to be 90 degrees. 

The third angle on your right is the same as the first one. It comes in at about 132° using my tools again. 

Question 23
I can help you with this. When you are asked to make an equation, you have to use an equal sign somewhere. 

The sum of the three angles should be 360° I'm going to create an error term because I'm almost sure what I measured won't make 360. All circles when you make angles from any point inside them should make angles that add up to 360° when measured with a protractor if the rays of the angles all start from the same point. [If you don't know what a ray is, call it "the arms of the angles"].

So let's create the equation.
Angle1 + angle2 + angle3 + E = 360°
Angle1 = 89° 
Angle2 = 132°
Angle3 = 132°
E is the error that represents the amount away from 360. Your teacher doesn't expect you to get this or to set it into your equation. The main thing you were supposed to do is add up the angles as you tried to do and state what your total was. This is what was expected.
Total = angle1 + angle2 + angle3
Total = 89 + 132 + 132 = 353. My error is 7° too little. So in my equation E = 7°

What to do
Somebody had to mark this with that green felt. You have a teacher. Go to the teacher and ask to be shown how to read the protractor if that person knows. You just need a bit of help. If the teacher cannot tell you, go to someone in your class who knows about that sort of thing and ask them. You're pretty close to getting it.

6 0
3 years ago
A circle has a diameter of 18 feet. Which following is closest to the l circumference of the circle?
lara [203]

circumference =2×pi×r

18/2=9(r)

so...2×pi×9

=54..5

6 0
2 years ago
Read 2 more answers
Alex ate 4 less the 2 times the slices of pizza that Oliver ate.If Oliver ate 8 slices of pizza how many slices did alex eat?
Fofino [41]

Answer: 12

Step-by-step explanation:  2 times of 8 is 16, but it says 4 less, so you subtract 4 and that equals 12.

 

7 0
1 year ago
Increase 140 bye 10%
Rus_ich [418]
10% of 140 is 14 so just add 14 to 140

140+14=154.
8 0
2 years ago
Read 2 more answers
What's the answer for number 2??
FromTheMoon [43]
Well if there are 3 outcomes just add the two other outcomes and subtract from 1 

so 0.4+0.25=0.35 

so the third outcomes has a 0.35 chance of happening or 35% 
4 0
3 years ago
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