Which number line represents the solutions to |x + 4| = 2?
2 answers:
Answer:
First picture , x=-6 and x=-2
Step-by-step explanation:
1. The idea is isolate x, hence we need to get rid of the +4 and the absolute value from the left side. To get rid of the absolute value, we need to set the right side as positive and negative.
2. Once we get rid of the absolute value, from each equation we solve for x. In the first equation we subtract 4 from both sides:
3. From the second equation, we subtract 4 from both sides
In conclusion, we get two solutions that meet the initial equality
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In degrees: 3π/4 radians = 135°
Angle of x=135° is in the 2nd Quadrant and has negative cos x values and positive sin x values.
cos 135° = cos ( 90° + 45°)= - sin 45° =
sin 135° = sin ( 90° + 45° ) = cos 45° =
. You can also see the graph in the attachment.
Angle of x=135° is in the 2nd Quadrant and has negative cos x values and positive sin x values.
cos 135° = cos ( 90° + 45°)= - sin 45° =
sin 135° = sin ( 90° + 45° ) = cos 45° =