Question

Todd's friend Olivia is flying her stunt plane at an elevation of 6.3 km. From the ground, Todd sees the plane moving directly toward him from the west at a 49° angle of elevation. Three minutes later he turns and sees the plane moving away from him to the east at a 65° angle of elevation. How fast is Olivia flying in kilometers per hour?

Answer 1

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Answer 2

hey bendt can u draw the problem please because it would be easy for me

Answer 3

and when u done with that can u go to http://openstudy.com/groups/mathematics/updates/4de811194c0e8b0ba037bbd8

Answer 4

\[\tan 49=\frac{d _{1}}{6.3}\implies d _{1}=6.3\tan 49\approx7.25km\]\[\tan 65=\frac{d _{2}}{6.3}\implies d _{2}=6.3\tan65\approx13.5km\]\[Speed=\frac{Dist.}{Time}\approx \frac{7.25+13.5}{0.05}\approx415km/hr\]

Answer 5

so the answer is 415 right

Answer 6

Yeah.