Find the slope of a line perpendicular to y=-2/5x+4/5.
1 answer:
For two lines to be perpendicular their slopes must be negative reciprocals of one another, mathematically:
m1*m2=-1
In this case, our reference line has a slope of -2/5 so our perpendicular slope must satisfy:
-2m/5=-1
-2m=-5
m=-5/-2
m=5/2
....
The negative reciprocal property can be more easily understood by realizing that the angle of a line is:
tanα=m
α=arctanm
So if one line, A, has a slope of m and the other, B, has a slope of -1/m
A=arctan m, B=arctan -1/m
B-A=90° (feel free to use any value for m that you choose to see that this is true, so if the two lines differ by 90°, they are indeed perpendicular)
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6
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Step-by-step explanation:
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6 + 0
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*don't forget to add brackets on each side of every calculation okay :)
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Answer:
Period=2pi/3
Step-by-step explanation:
The answer is 3, if it is in square meters it must be a square therefore each side is the same length
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