SOLUTION: hello... so I tried answering this question using their slopes but I only got arctan(7/11) as an answer. And the book which I'm using shows that the answer is π-arctan(7/11).
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-> SOLUTION: hello... so I tried answering this question using their slopes but I only got arctan(7/11) as an answer. And the book which I'm using shows that the answer is π-arctan(7/11).
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Question 1127740: hello... so I tried answering this question using their slopes but I only got arctan(7/11) as an answer. And the book which I'm using shows that the answer is π-arctan(7/11). I don't know why there is a π. Can you please show me the correct solution?
Problem:
Find the angle from 3x+2y=6 to 4x-y=8?
Thank you! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Find the angle from 3x+2y=6 to 4x-y=8?
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Find the 2 slopes:
3x+2y=6 --> m1 = -3/2
4x-y=8 ---> m2 = 4
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Measuring the angle going CCW from the 1st eqn to the 2nd gives and angle greater than 90 degs. --> pi - atan(7/11)
