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#2376 2012-12-24 22:06:17
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2377 2012-12-25 18:36:09
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1685 is correct. Good work!
#1686. Find 2 + 7 + 12 + ..... to 10 terms.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#2378 2012-12-25 18:43:22
- mathaholic
- Member
- From: Earth
- Registered: 2012-11-29
- Posts: 3,251
Re: Oral puzzles
Last edited by julianthemath (2012-12-26 12:12:06)
Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate
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#2379 2012-12-25 22:07:25
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
Yikes! I gave the 10th term instead of the sum!
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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#2380 2012-12-25 22:11:06
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
[hide=#1686]245[/hode]
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#2381 2012-12-26 19:33:28
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi,
The solution #1686 is correct, julianthemath and anonimnystefy! Neat work!
#1687. In triangle PQR, angle Q = 90 degrees. Find tan P - cot R.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#2382 2012-12-26 21:17:59
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
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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#2383 2012-12-27 12:50:14
- mathaholic
- Member
- From: Earth
- Registered: 2012-11-29
- Posts: 3,251
Re: Oral puzzles
I think this is a right triangle.
So, I will compute:
180-90=90
Split:45
I don't know if tan P is 45
and cot R is 45, too.
Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate
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#2384 2012-12-27 19:10:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym and julianthemath,
The solution #1687 is
Excellent, bobbym!
#1688. Given 15 cot A = 8, find sin A and sec A.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2385 2012-12-28 08:15:59
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
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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#2386 2012-12-28 17:54:07
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1688 is perfect. Smart work!
#1689. If cot θ = 7/8, find the value of
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2387 2012-12-28 22:52:16
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2388 2012-12-29 18:43:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1689 is correct. Good work!
#1690. If
, find cos θ and tan θ.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2389 2012-12-30 01:08:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
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
#2390 2012-12-30 18:45:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1690 (both parts) is correct. Excellent!
#1691. If tan A =
, find the value of tan A/(1 + tan[sup]2[/sup]A).It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2391 2012-12-31 02:35:40
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
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
#2392 2012-12-31 18:45:50
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1691 is correct. Good work!
#1692. Evaluate : (cos 45[sup]o[/sup])/(sec 30[sup]o[/sup] + cosec 30[sup]o[/sup])
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2393 2013-01-01 01:53:09
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#2394 2013-01-01 19:00:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi bobbym,
The solution #1692 is perfect. Excellent!
#1693. If
, then find the value of cot A.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#2395 2013-01-01 23:39:24
- scientia
- Member
- Registered: 2009-11-13
- Posts: 224
Re: Oral puzzles
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#2396 2013-01-02 03:33:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#2397 2013-01-02 19:21:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi scientia and bobbym,
The solution #1693 is correct. Neat work!
#1694. Find the value of cot[sup]2[/sup] θ - 1/sin[sup]2[/sup] θ.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online
#2398 2013-01-02 23:07:47
- scientia
- Member
- Registered: 2009-11-13
- Posts: 224
Re: Oral puzzles
Last edited by scientia (2013-01-02 23:08:25)
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#2399 2013-01-03 02:24:30
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#2400 2013-01-03 18:27:26
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,398
Re: Oral puzzles
Hi scientia and bobbym,
The solution #1694 is correct. Neat work!
#1695. If cos θ = 21/29, find the value of (sec θ)/(tan θ - sin θ).
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Online