|Apr30-06, 02:26 PM||#1|
sine and cosine
Hello, could anyone help me calculate the value of x?
246.25 sin x - 676.58 cos x = -27768.42
|Apr30-06, 02:28 PM||#2|
You know the smallest value sin x can have, and the largest value cos x can have. So what is the smallest value 246.25 sin x - 676.58 cos x can have?
(Or are you expected to work with complex numbers?)
|Apr30-06, 02:32 PM||#3|
Ah, yea that's right. it's impossible to solve it.
Well, this equation is derived from somewhere else, and I might have done mistake in doing it.
This is the question:
Use Cartesian vector method to solve the problem. If you use any other method, you will receive zero.
A pilot wishes to fly form city A to city B, a distance of 720 km on a bearing of 70 degree. The speed of the plane is 700 km/h. An 60 km/h wind is blowing on a bearing of 110 degree. What heading should the pilot take to reach his or her destination? How long will the trip take?
Could you help me with this please? I will post my work in 5 minutes.
|Apr30-06, 09:55 PM||#5|
As I see it, the last line is wrong, you divided the LSH by 700 but forgot to divide the RHS by 700. :)
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