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#1 2015-05-02 16:57:34
- Mathegocart
- Member
- Registered: 2012-04-29
- Posts: 2,226
Law of sines?
Aliaa and Zhang Li are tennis-playing robots capable of placing shots with superhuman precision.
Aliaa is about to hit its next shot to the far corner of the court. It (Aliaa) knows that the distance between itself and Zhang Li is 520\cm, and it knows that the angle between Zhang Li and the far corner is 53 degrees
∘
. Similarly, Zhang Li knows that the angle between Aliaa and the far corner is 100 degrees
∘
.
What distance should Aliaa hit the ball so that it lands perfectly in the far corner of the court?
Round your answer to the nearest centimeter.
So what i did
and then
resulting in
416*2=832
but Khan Academy says 1128 cm....
any hel=p?
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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#2 2015-05-02 16:58:49
- Mathegocart
- Member
- Registered: 2012-04-29
- Posts: 2,226
Re: Law of sines?
sorry i just noticed same file
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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#3 2015-05-02 17:59:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Law of sines?
Hi;
I am getting 1128 also.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4 2015-05-03 06:04:18
- Mathegocart
- Member
- Registered: 2012-04-29
- Posts: 2,226
Re: Law of sines?
Another problem
An astronomer knows the distances from herself to stars AA and BB, as well as the distance between them. The distances are 450450, 400400, and 9090 light years respectively.
If the astronomer's telescope is currently pointed at star AA, how many degrees must she rotate her telescope to see star BB?
^\circ
∘
Round your answer to the nearest degree.
Well
what i did
I got
76 degrees...
and they got 10 degrees...
Last edited by Mathegocart (2015-05-03 06:04:48)
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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#5 2015-05-03 06:07:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Law of sines?
450450? Your drawing says 450.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#6 2015-05-03 06:17:19
- Mathegocart
- Member
- Registered: 2012-04-29
- Posts: 2,226
Re: Law of sines?
I mean 450.... mistake
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
Offline
#7 2015-05-03 06:37:58
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Law of sines?
Where does the 500 come from? Try 450.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
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