(Solution Download) a student bikes to school by traveling first dN=0.900 miles north then dW=0.600 miles west and...

a student bikes to school by traveling first dN=0.900 miles north then dW=0.600 miles west and finally dS=0.100 miles south.
If a bird starts from the origin of where student starts and fly directly in straight line to school what distnace dB would the bird cover,Take dN be the displacement vector corresponding to the first leg of the student's trip Express in component form