Answer My Questions on Calculating Angles from a Picture

[hpla]

hey . this is a simple Questions , look at pic this is a statics


[PLAIN]http://hh7.net/Sep/hh7.net_13195790041.png


my Question . how he calculate 120 , 290 for Angles ??

 

[SteamKing]

Your diagram doesn't match the table.

 

[gsal]

I don't quite understand what's being asked.

 

[W R-P]

The angles show the direction each force is acting,ANTICLOCKWISE relative to the positive x-axis ---->
150 N acts at 120 degrees, starting from ---> go anticlockwise 90 degrees,then add 30 degrees = 120 degrees
50 N acts at 250 degrees,not 290 go 180 degrees anticlockwise then add 70 degrees.

P.S THE UNITS ARE ALL WRONG, they should be N not Nm

 

[asteriatic]

Hello,

Thank you for your question. To calculate the angles in the picture, we can use the principles of geometry and trigonometry.

Firstly, we can use the fact that the sum of all angles in a triangle is equal to 180 degrees. In the picture, we can see that the top angle is marked as 120 degrees. Therefore, we can subtract 120 from 180 to find the measure of the other two angles in the triangle, which would be 60 degrees each.

Next, we can use the concept of supplementary angles, which are two angles that add up to 180 degrees. In the picture, we can see that one of the angles in the bottom triangle is marked as 70 degrees. Therefore, the other angle must be 180-70 = 110 degrees.

Finally, to calculate the angle marked as 290 degrees, we can use the concept of vertical angles. Vertical angles are formed when two lines intersect and are opposite to each other. In the picture, we can see that the angle marked as 290 degrees is opposite to the angle marked as 70 degrees. Therefore, they must be equal in measure, and the angle marked as 290 degrees must also be 70 degrees.

I hope this helps to answer your question. Let me know if you have any further inquiries. Thank you.