Asked by Tareena-- check my answer please
Two Planes leave an airport at the same time, one flying 300km/h and the other at 420km/h
The angle between their flight paths is 75 degrees after three hours, how fart apart are they?
The angle between their flight paths is 75 degrees after three hours, how fart apart are they?
Answers
Answered by
drwls
I don't see your answer to check.
The law of cosines would work well on this problem. You know two sides (900 and 1260 km) and the included angle (75 deg) of a triangle.
The law of cosines would work well on this problem. You know two sides (900 and 1260 km) and the included angle (75 deg) of a triangle.
Answered by
Tareena-- check my answer please
so it would be c^2=a^2+b^2-2ab cos C
900^2+1260^2-2(900)(1260)(cos75)
c^2=33542.9
c=183.14km
is it right?
900^2+1260^2-2(900)(1260)(cos75)
c^2=33542.9
c=183.14km
is it right?
Answered by
Tareena-- drwls check my answer please
thanks
Answered by
drwls
No. It isn't right. See my answer to your later post.
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