Adding Vectors: 28lb, 45° North-West & 15lb North

[drkidd22]

Homework Statement

add vector of 28lb at 45 degree north-west and vector 15lb north

Homework Equations

law of cosines

The Attempt at a Solution

attached .pfd file

Please can someone verify that my Resultant vector is correct

 

[Doc Al]

Looks good to me. (I would round off your final answer to a reasonable number of significant figures.)