The-position-of-a-point-A-is-41-N-18-E-point-B-is-8000-km-due-west-of-A-Find-the-longitude-of-B-to-the-nearest-degree-

Question Number 9203 by tawakalitu last updated on 23/Nov/16

The position of a point A is (41 ° N, 18 ° E)

point B is 8000 km due west of A . Find the

longitude of B to the nearest degree .

Answered by mrW last updated on 23/Nov/16

The radius of the Earth is roughly

R = 6371 km .

r = 6371 \times \cos 41 ° = 4808 km

\frac{8000}{2 π \times 4808} \times 360 \approx 95 °

18 - 95 = - 77

The langitude of point B is 77 ° W .

Commented by tawakalitu last updated on 23/Nov/16

Thank you sir . God bless you .