Question

NO LINKS!! Part 8: Please help me with this problem​

Answer 1

Explanation:

in 10 hrs distance covered=speed×time=15×10=150 nautical miles.

x²=600²+150²-2×600×150×cos 20°

x²=360,000+22,500-180,000×cos 20°

x=√(382,500+180,000×cos 20°)

x\approx 742.73 nautical miles

time taken=742.73/15 \approx ~49.52 hours

total time taken=10+49.52=59.52 hours

applying sine formula

`(sin ~B)/(150) =(sin~20)/(742.73) \\\sin~B=(150)/(742.73) *~sin~20\\B=\sin^(-1) [(150)/(742.73) * \sin~20]\\B\approx~3.96 ^\circ\\B\approx 4^\circ`

so it has to make a turn=20+4=24°

Answer 2

Explanation:

here !