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3 years ago

Please help I found this one a bit confusing

Mathematics

1 answer:

Sergio [31]3 years ago

3 0

Answer:

Step-by-step explanation:

If you look closely.. You can see that one is longer than the other

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Given that cos 26 degrees= 0.899, write the sine of a complementary angle

Vladimir [108]

Complementary = angle+other angle = 90 degrees

90-26(given)=64
There is only one complimentary angle to any other angle, so 64 is the only other one. Sin(64)=.899

Sin(64)=cos(26)
This is because cosine and sine are actually THE SAME. Cosine exists because there's sine. Cosine is sine moved over on a graph a bit. The sine of any angle, plus 90degrees (or pi/2) is equal to the cosine of that angle

Cos(x)=sin(x+90) <--degrees
Cos(x)=sin(x+pi/2) <-- radians(from unit circle)

Unit circle has 90 degrees at pi/2 which is why that works. Using a graphing calculator in degrees, you'd use the first equation I gave to prove that they're equal, and in radian mode, you'd use the second one. Cosine is Co in front of sine. Co meaning complimentary, which is why the problem equals each other when solved

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3 years ago

How do you find the slope of a line?

Black_prince [1.1K]

"Rise over Run" is a common way of remembering this means that you work out how much the line has gone up and then dividing this by how much the line has gone to the left

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3 years ago

Annie is choosing an outfit for the day. She has a choice of three pairs of pants, two shirts, and three pairs of shoes. How man

vlada-n [284]

There are 3 choices for the pants. Having selected a pair of pants there are 2 choices for a shirt. Therefore there are 3 * 2 possible choices for a pair of pants and a shirt. Each of these 6 possible choices can be combined with each of the 3 possible choices of a pair of shoes. So, the total number of choices of outfit is given by:
$3\times2\times3=18\ choices$

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3 years ago

Write your own word problem and share it with the group. Then translate your problem into its resulting math equation. What step

Ainat [17]

Step-by-step explanation:

Word Problems are mathematical problems presented in complete languages, rather than in mathematical notations.

Example:

A certain number is divided by half, the result is added to itself to give 6, what is the number?

Solution:

- Let the number be x

- Divide x by half:

In word problem, extra caution is to be taken, as misinterpretation can be very chaotic. Dividing a number by 2, is totally different from dividing the number by half.

4 divided by 2 is 4÷2 = 2

4 divided by half is 4÷½ = 4×2/1 = 8

2 and 8 are different, reason to be cautious.

So dividing x by half, we have:

x ÷ 1/2 = x × 2/1 = 2x.

- Now, what we have is

2x + x = 6

Solving this equation, we can obtain the value of x.

2x + x = 6

3x = 6

Dividing both sides by 3

3x/3 = 6/3

x = 2.

Therefore, the solution to the word problem is x = 2.

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3 years ago

Can you pleasee explain how to find a y- intersept??

AveGali [126]

a y-intercept is any point that has an x-value of 0. for example, the ordered pairs (0,6) and (0,-4) would both be considered y-intercepts since any point with an x-value of 0 overlaps with the y-axis.

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3 years ago

Read 2 more answers

Please help I found this one a bit confusing ​

Please help I found this one a bit confusing