04-29-2012, 09:48 PM
It is not necessary to use either tan or cosine. It is best to convert the degrees to radians and then simply multiply 5000 kms by the radians. The accuracy of the missile can then be estimated as follows:
(0.001/3)*(1/57)*5000*1000 which is 30 meters.
(0.001/3)*(1/57)*5000*1000 which is 30 meters.