1. The problem statement, all variables and given/known data An enemy fighter jet has invaded friendly airspace and is travelling on a bearing of 40 degrees. At the time they scramble an interceptor from a nearby airbase, the enemy jet is 200km away and on a bearing of 10 degrees from the airbase. The enemy jet is travelling at 1200km/h. The interceptor can fly at 2500km/h. On what bearng should the interceptor fly in order to intercept the enemy in the shortest possible time, assuming that the interceptor accelerates immediately to 2500km/h after take off? 2. Relevant equations cosine rule, sine rule 3. The attempt at a solution I am puzzled alot by this problem. I really don't know how to optimise this problem. Please help!