Question 523790: Find the obtuse angle between the y- axis and the line with a slope of m= -1/4?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the obtuse angle between the y- axis and the line with a slope of m= -1/4?
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Plot the point (4,-1) and (0,0)
Draw a line thru them so you can see what is happening.
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invtan(-1/4) = -14.04 degrees is the acute angle.
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180-14.04 = 165.96 degrees is the obtuse angle.
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Cheers,
Stan H.
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