Can someone PLEASE explain cos and sin?!

Answers

Answer 1

Answer: Yes.

If you have a RIGHT triangle with a 29-degree angle in it, and you
divide the length of the leg adjacent to the angle by the length of the
hypotenuse, then it doesn't matter whether the triangle is drawn on
the head of a pin or on a piece of paper that reaches from the Earth
to the Moon, the quotient of (adjacent)/(hypotenuse) will always be
the same number ... about 0.875 .

That number is a property of every 29-degree angle, no matter the size
of the right triangle that it's in. It's called the cosine of 29 degrees.

If you were to divide the leg opposite the 29-degree angle (instead of
the adjacent leg) by the length of the hypotenuse, you'd get a different
number ... about 0.485 . That number is also a property of every 29-degree
angle, no matter the size of the triangle around it. That one is called
the sine of 29 degrees.

I just used 29 degrees as an example. Every angle has a sine and
a cosine, and a few other things too.

If you have an angle, there's no easy way to calculate its sine or its
cosine. You just have to look them up. They're in tables in books,
or on line (just put 'cosine 29' in Google), and if you have a calculator,
they're probably on your calculator too.

You don't know yet what these are good for, or what you can do with
them. That'll be coming up in math before you know it !

So the easiest answer to your question is:

Every angle has properties, characteristics, and aspects of its
personality that you never notice until you really get to know it.
They're called the sine, the cosine, the tangent, the cotangent,
the secant, and the cosecant. They're all numbers, and every
angle has a full set of them !

Answer 2

Answer: Using sine and cosine, it's possible to describe any (x,y) point as an alternative, (r,θ) point, where r is the length of a segment from (0,0) to the point and θ is the angle between that segment and the x-axis. This is called the polar coordinate system, and the conversion rule is (x,y) = (rcos(θ),rsin(θ )).

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What are the coordinates of point F

Answers

the answer is 7,-5

hope this helps

It is 7,-5 for coordinate for

What is the answer to this.
2 1/3 + 3 1/4

Answers

first you make them into improper fractions

2 1/3 = 3 + 3 + 1 /3 = 7/3
3 1/4 = 4 + 4 + 4 + 1 /4 = 13/4

Then you make a common denominator

7/3 + 13/4 = x/12 + y/12

13 x 3 = x, and 7 x 4 = y ( do cross multiplication)

39/12 + 28/12 = 67/12 ( answer in improper fraction)

67/12 = 12 + 12 + 12 + 12 + 12 + 7

5 7/12 is your answer in mixed fraction

hope this helps

2 1/3 + 3 1/4 = 5 7/12

1. First, you have to find a common denominator... 12
- 3: 3, 6, 9, 12, 15...
- 4: 4, 8, 12, 16, 20...
- Both have an LCM as 12, so that is the common denominator.

2. Second, you make the fractions equivalent to when the denominator is 12...
- 1/3 x 4 = 4/12
- 1/4 x 3 = 3/12

3. Lastly, add...
- 2 4/12 + 3 3/12 = 5 7/12

Hope this helped! :)

What’s the actual distance = yards?

Answers

Answer:

So we know 4 inches is 120 yds

Step-by-step explanation:

We can use ratio's to solve this problem

1 inch 4 inch

------------ = --------------

30 yds x yds

Using cross products

1 * x = 30*4

x = 120

So we know 4 inches is 120 yds

Answer:

120 yards

Step-by-step explanation:

A map scale is a ratio.

1 inch : 30 yards

Multiply both sides of the ratio by 4.

4 * 1 inch : 4 * 30 yards

4 inches : 120 yards

The sum of 3 consecutive odd numbers is 51. what is the second number in this sequence

Answers

Answer:

Step-by-step explanation:

since it is in the middle you can just divide by 3 since one will be greater and one will be less so 51/3=17

Assume the second number to be x, then the first numbers is X-2, third number is x + 2
Thus we have a sequence of x-2,x,x+2,the sum of these number is 51:
X-2+x+x+2=51
X=17
So, 15, 17, 19

Can someone help me answer these?

Answers

10.
If it is rolling a six as in a dice, then it would not be the same probability as getting heads on a coin because the probability of rolling a six on a dice wiuld be a 1/6 probability. Flipping a coin and getting heads would be a 1/2 probability.

11.
Donald can do this because on a standard dice, the probability of rolling one number is 1/6. (If it would be the probability of rolling an even number, it would be 3/6, which simplifies to 1/2, in case you didn't know or weren't sure.)

Hope I helped!!

PLS HELP ME WITH THIS QUESTIONNN

Answers

Answer:

F 1/36

Step-by-step explanation:

There are 3+5+10 = 18 markers in the drawer

P (green) = green/total =3/18 = 1/6

P( green,green) = P(green) * P (green)

= 1/6* 1/6 = 1/36

Getting 2 greens in a row with replacement is 1/36

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