# Finding angle for this resultant vector

Hello I am working on this problem and just cant figure it out...

Consider two displacements, one of magnitude 3.0 m and another of magnitude 3.8 m. What angle between the directions of this two displacements give a resultant displacement of magnitude (a) 5.7 m, (b) 2.5 m, and (c) 3.6 m.

I have tried to draw the triangle and then use law of cosines and sines to find the appropriate angle but it seems to not be going the way I want it. Is this the correct solution or is there another way to go?

Any help is greatly appreciated.

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Welcome to PF!

Hello RandellK02! Welcome to PF! I have tried to draw the triangle and then use law of cosines and sines to find the appropriate angle but it seems to not be going the way I want it. Is this the correct solution or is there another way to go?
It should work.

(You are drawing the two given sides head-to-tail, aren't you?)

Show us one of your attempts. Okay I will retry my math.
Thanks

Website states this is Incorrect.

Consider two displacements, one of magnitude 2.9 m and another of magnitude 4.4 m. What angle between the directions of this two displacements give a resultant displacement of magnitude (a) 5.6 m, (b) 2.9 m, and (c) 4.6 m.

98.1
40.7
75.0