Find the reference angle for the given angle. Show your work. -404°
2 answers:
Answer:
44°
Step-by-step explanation:
The reference angle is the magnitude of the smallest angle between the terminal ray and the x-axis.
Your angle is one full circle clockwise plus 44° more (-360° -44° = -404°), so makes an angle of -44° with respect to the positive x-axis. The magnitude of that is 44°.
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<em>Using a function</em>
The attachment shows a calculator function that can be used to find the reference angle for any angle. (Replace the value -404 with the angle of your choice.)
Answer:
44 degrees.
Step-by-step explanation:
What the reference angle is asking for, is that when you rotate that amount of degrees(or radians), you want to find the angle when you connect it to the x-axis. For example, (the attachment) the angle 200 is the same as if you go 20 degrees from the left side of the x axis. So, the same applies if the angle is negative. Also, if you're angle(but it's positive) is bigger than 360, you can just ignore it because it is a full rotation. So 404 is bigger than 360, so we can ignore it. 404-360 is 44. So that means we really rotated -44, meaning we spun clockwise instead of counter clockwise. Now, since our positive angle(44) is less than 90, we are done. This is because if our reference angle is greater then 90, than we can just create a new angle because it would leak into another quadrant, meaning we can define a new reference. Hope this makes sense.
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Answer:
The 90% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample mean for men is
The sample mean for women is
The sample size for men is
The sample size for women is
The standard deviation for men is
The standard deviation for women is
From the question we are told the confidence level is 90% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the standard error is mathematically represented as
=>
=>
Generally the margin of error is mathematically represented as
=>
=>
Generally 90% confidence interval is mathematically represented as
=>
=>
Using the t-distribution, it is found that the 99% confidence interval for the true difference between the mean distance hit with the new model and the mean distance hit with the older model is (-25.4, 40.4).
We will find the <u>standard deviation for each sample</u>, hence, the t-distribution will be used.
For each sample, the mean, standard deviation and sample sizes are given by:
The standard error for each sample is given by:
The distribution of the differences has <u>mean and standard error</u> given by:
The interval is:
The critical value for a <u>99% two-tailed confidence interval</u>, with 10 + 10 - 2 = <u>18 df</u>, is t = 2.8784.
Then:
The 99% confidence interval for the true difference between the mean distance hit with the new model and the mean distance hit with the older model is (-25.4, 40.4).
To learn more about the use of the t-distribution to build a confidence interval, you can check brainly.com/question/25675821