Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made. (5 points)
2 answers:
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Given:
The terminal point of is (1,0).
To find:
The value of .
Solution:
If the terminal point of is (x,y), then
It is given that the terminal point of is (1,0).
Here, x-coordinate is 1 and the y-coordinate is 0. Using the above formula, we get
Therefore, the value of is 0.