Hi sinjid9,
if the ratio of angles is 1:2:3 there are 6 parts and the sum of the angles in a triangle is 180 degrees.
One angle is
The other angles are twice and three times that,
To calculate the ratios of the sides, you can re-arrange the Sine Rule (Law of Sines).
to get
then a:b=SinA:SinB
Also
then a:b:c=SinA:SinB:SinC
When the ratio of the angles is 4:5:6, there are 15 parts
Then the angles are
then solve as above
A satellite travels in a circular orbit 1600km above Earth and takes 2 hours to complete one orbit. It will pass directly over a tracking station at 12:00 noon. If the tracking station can first pick up the satellite at a 30 degrees angle of elevation, at what time will the satellite appear? (The radius of the Earth is about 6400 km)
Does it look something like this?
http://img231.imageshack.us/i/mathpic2.png/
Hello, sinjid9!
You should start another thread for a new problem.
A satellite has a circular orbit 1600km above Earth and has a 2-hour orbit.
It will pass directly over a tracking station at 12:00 noon.
If the tracking station can first pick up the satellite at a 30 degrees angle of elevation,
at what time will the satellite appear? (The radius of the Earth is about 6400 km.)Code:S o \ * \ * 1600 \ * \ 30°* T H - - - \ - - o - - - - - *\ : * * \ : * * 6400\ :6400 * \ : * \: * * - - - - o - - - - * C
The center of the earth is
The tracking station is at km.
The satellite is at km.
The angle of elevation of the satellite is 30°.
. .
In , Law of Sines: .
. . Hence: .
. . And: .
The satellite moves 360° in 2 hours.
To move 16.15°, it will take: .
The satellite will appear 5 minutes, 23 seconds before 12 noon.