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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2013-09-03 07:34:13

Hi;

Very good. Did you draw a diagram on that trig problem about the house?

mathstudent2000
2013-09-03 03:48:22

thanks

bobbym
2013-09-02 13:14:09

Forcing them to computational math would reduce their numbers real quick.

anonimnystefy
2013-09-02 12:26:51

Unfortunately, that does not reduce their numbers. Only one thing does.

bobbym
2013-09-02 09:41:19

I think we should consider all topologists the same.

anonimnystefy
2013-09-02 09:36:40

Definitely! And there's so many of 'em!

bobbym
2013-09-02 09:20:29

Yea, they are weird.

anonimnystefy
2013-09-02 09:19:07

And, it would make even topologists happy. They already think all triangles are the same!

bobbym
2013-09-02 09:18:05

All triangles should be named ABC by law. What if you have a bunch of them? No difference!

anonimnystefy
2013-09-02 09:15:15

Hi bobbym

My bad! Thought it was GIH again. Your answer is correct for 5!

bobbym
2013-09-02 09:06:17

Hi;

anonimnystefy
2013-09-02 08:59:17

Hi







bobbym
2013-09-02 08:57:38

Hi;

mathstudent2000
2013-09-02 08:05:10

1. What is the sine of an acute angle whose cosine is 7/25?

2. I'm standing at 300 feet from the base of a very tall building. The building is on a slight hill, so that when I look straight ahead, I am staring at the base of the building. When I look upward at an angle of 54 degrees, I am looking at the top of the building. To the nearest foot, how many feet tall is the building?

3. If A is an acute angle such that \tan A + \sec A = 2, then find \cos A.

4. In triangle GHI, we have GH = HI = 25 and GI = 30. What is \sin\angle GIH?

5. In triangle GHI, we have GH = HI = 25 and GI = 40. What is \sin\angle GHI? (Note: This is NOT the exact same as the previous problem!)

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