# Trigonometry

If a point on the Cartesian plane lies at (4, 2), what is the angle made between the line containing the point and the origin, and the negative y-axis?

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1. well first what is the angle of line above the x axis ?
tan theta = 2/4 = 1/2
so theta = 26.565 degrees above x axis
that means it is also 26.565 degrees below the negative x axis
we want angle from there to 90 degrees below the x axis
90 - 26.56 = 63.43 degrees to straight down
63.43 * pi/180 =

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Damon
2. b would be to the negative X axis.
typo?

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Damon
3. make a sketch, and mark the angle you want

slope of the line is 1/2
so the tangent of the angle = 1/2

set your calculator to radians, angle in standard position would be .4636...

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Reiny
4. I suspect a typo, means negative X axis

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Damon
5. When i searched this question on google, some of the answers were saying b, so i typed b

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6. "anonymous" is edging toward being banned if s/he continues to randomly hand out answers.
Be aware.

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Writeacher

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