Answer:
To find the magnitude and angles of the resultant force, we can use the given forces of 5 pounds and 18 pounds with an angle of 159°. Let's calculate them separately:
For the 5-pound force:
Magnitude: 5 pounds
Angle: 159°
For the 18-pound force:
Magnitude: 18 pounds
Angle: -21° (since 159° + (-21°) = 138°, which is less than 180°)
Now, let's find the resultant force:
Resultant force magnitude: 18.3589 pounds (rounded to 4 decimal places)
Resultant force angle: 138° (rounded to 1 decimal place)
Be careful with the signs of the angles and make sure they add up correctly. Let me know if there's anything else I can help with!