Answer:
The answer is "measure the parallax and use it in calculations".
Explanation:
In this question, the above choice is correct because, in the summer and winter, light is observed from both parts of a planet. An astronomer can once, again and 6 weeks later calculate the position of a star and then compute the perceived shift of location. It measures which utilizes parallax and its best method for calculating the approximate distance between the star, as well as the planet.
(a)
We have been given an equation 
. Upon taking derivative of this equation with respect to x on both the sides, we get:
(b)
In order to write the equation of tangent line, we need to find the slope of the line. We know that point (3,11) lies on the graph. Therefore, we write the slope of the tangent as:
Therefore, equation of tangent line is:
(c)
We know that slope of tangent is given as 
. The tangent will be vertical when denominator of slope is zero, that is:
Answer
I’m not philippine so I can’t help lol
In the fourth paragraph, the author mentions what he "gained from the dialogue” and what he "got from Sheridan” (lines 29–30) primarily to <u>illustrate his developing arguments against slavery and validate his beliefs</u>
Although your question is incomplete, I made use of the context clues to come to a conclusion of the most plausible meaning based on the words shown and this was to validate his beliefs about the issue of slavery.
<h3>What is a Narration?</h3>
This refers to the storytelling that is done with the aid of a narrator and this helps to advance the plot.
Hence, we can see that In the fourth paragraph, the author mentions what he "gained from the dialogue” and what he "got from Sheridan” (lines 29–30) primarily to <u>illustrate his developing arguments against slavery and validate his beliefs</u>
Although your question is incomplete, I made use of the context clues to come to a conclusion of the most plausible meaning based on the words shown and this was to validate his beliefs about the issue of slavery.
Read more about narration here:
brainly.com/question/1934766
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