Question

an aircraft is travelling from calabar to kano, it first flies to ilorin on 40 degree covering a distance of 80km, it then flies 120 degree and covers a distance of 40 km to kano. find the distance between calabar and kano
draw the sketch.
I see an angle between the first leg and the second leg as 160 degrees.

Law of cosines:
d^2=80^2+40^2 - 2*80*40*cos160

Related Questions

An aircraft travelled from calabar to kano as follows; it flew first to ilorin covering a distance o... An aircraft travelled from Calabar to Kano as follows. It first flew to illorin with a distance 300k... an aircraft travelled from calabar to kano it flew first to illorin covering a distance of 300km at... An aircraft travelled from Calabar to Kano as follows:it flew to Imprint covering a distance of 3...