Mathematics, 28.01.2020 14:56, ghari112345
Two planes left an airport at the same time and in still air. one flew east at 450 mi/h, and the other flew at 380 mi/h. in what direction did the second pilot fly if the two planes were 800 mi apart after 1 hour?
Answers: 1
-----> given problem![cos(C)=[a^{2}+b^{2}-c^{2}]/[2*a*b]](/tpl/images/0477/2743/21b11.png)
![cos(C)=[450^{2}+380^{2}-800^{2}]/[2(450)(380)]=-0.8570](/tpl/images/0477/2743/03563.png)
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Two planes left an airport at the same time and in still air. one flew east at 450 mi/h, and the oth...
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