Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**fusilli_jerry89****Member**- Registered: 2006-06-23
- Posts: 86

ganesh wrote:

T # 8

If x*sin60°*tan30°=(sin45°*cot45°)/(cos30°*cosec60°), find x.

for this i got every part easily cept sin 45 because it equals a long decimal so it didnt seem right but i got 1.414

Offline

**Eeyore****Member**- Registered: 2007-04-16
- Posts: 8

The foot of the pole and the midpoint of the pole are in the same horizontal level. ??

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,544

hi ganesh

T#7 θ=60°

T #8 I got x=√2

*Last edited by anonimnystefy (2011-06-27 02:38:36)*

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

Offline

**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,555

[hide]

#2

1/9

#3

266.67m high

#5

0.258819045

What happened to number 1 and 4?

Offline

**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,555

Oh wait, there they are.

Offline

**Stormtangent****Member**- Registered: 2011-09-03
- Posts: 33

7.

8.

"Have you ever had a dream that you were so sure was real? What if you were unable to wake from that dream? How would you know the difference between the dream world and the real world? "

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi anonimnystefy, Shivamcoder3013, Stormtangent, and fusilli_jerry89,

The solutions #7 and #8 are correct. Excellent!

#9. If two angles of on the base of a triangle are 22.5 degrees and 112.5 degrees, then what is the ratio of the height of the triangle to length of the base?

Character is who you are when no one is looking.

Offline

**Stormtangent****Member**- Registered: 2011-09-03
- Posts: 33

"Have you ever had a dream that you were so sure was real? What if you were unable to wake from that dream? How would you know the difference between the dream world and the real world? "

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi Stormtangent,

The solution #9 is correct. Brilliant!

Character is who you are when no one is looking.

Offline

**Stormtangent****Member**- Registered: 2011-09-03
- Posts: 33

Any new problems here? I'm up for some of these, as I need to hone my trig.

"Have you ever had a dream that you were so sure was real? What if you were unable to wake from that dream? How would you know the difference between the dream world and the real world? "

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi Stormtangent and bobbym

#10. If

, find the angle A.Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

guess its 30 degree

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi bobbym and Maiya,

The solution #10 is correct. Good work!

[Please use the hide tag, Maiya, to hide the solutions]

`[hide= The message to be hidden][/hide ]`

#11. Find the value of

.Character is who you are when no one is looking.

Offline

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

sorry i din't know that code

so whats the code????????

Offline

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

don't bother,............

i got it anyway

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi Maiya,

Hope you get the code!

Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi bobbym,

The solution #11 is correct. Well done!

#12. Find the value of

.Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

**Stormtangent****Member**- Registered: 2011-09-03
- Posts: 33

Hi Ganesh,

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 14,528

Hi bobbym and Stormtangent,

The solution #12 is correct, bobbym! Excellent!

The solutions #10, #11, and #12 are correct, Stormtangent! Excellent!

#13. Find the value of

.Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi ganesh;

Of course that result can be rigorously obtained, but who cares?

Combinatorics is Algebra and Algebra is Combinatorics.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,544

hi ganesh

the thread name is spelled wrong.

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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi anonimnystefy;

I took care of it.

Of course that result can be rigorously obtained, but who cares?

Combinatorics is Algebra and Algebra is Combinatorics.

Offline