Science & Mathematics - 21 July 2006

2006-07-21 07:45:02 · 1 answers · asked by Hassan Khalid 1 in Biology

2006-07-21 07:44:18 · 7 answers · asked by Tea 6 in Physics

Ok Math fans, here's another challenge for you, a question that came up to my mind.
The first one to answer this correctly, with providing all the procedures of doing it, wins 10 whole points.
So here is the question:
Prove that { the difference between the two diagonals} times {the sum of the two diagonals} of any parallelogram equals to (4ab*cosx).
That is, prove that:
(d+f)(d-f) = (4ab)(cosx)
where d is the long diagonal, and f is the short one.
a and b are the two different sides of the parallelogram, and x is the small angle between those two sides. Assume that the other angle is (180 -x).
After providing the proof, give an example.
So, as said, "survival of the fastest!" Nice quote.

2006-07-21 07:43:41 · 4 answers · asked by Anonymous in Mathematics

Specifically by dislocating the guidence system away from enemy and, say, non-retributively guiding missile to a no-harm area?

2006-07-21 07:42:27 · 6 answers · asked by Dan M 1 in Engineering

not dish or directv...my own personal dish and receiver to get any channel i want :)

2006-07-21 07:38:42 · 6 answers · asked by gobereateryouare 1 in Astronomy & Space

2006-07-21 07:35:24 · 12 answers · asked by bharathi 1 in Geography

2006-07-21 07:33:55 · 3 answers · asked by dat dude 1 in Earth Sciences & Geology

2006-07-21 07:32:25 · 11 answers · asked by hkenstuart 1 in Astronomy & Space

2006-07-21 07:31:25 · 11 answers · asked by bharathi 1 in Biology

the planets in our galaxy, the milky way, from the sun outward. First one to name them in order gets 10 points...

2006-07-21 07:30:30 · 31 answers · asked by 345Grasshopper 5 in Astronomy & Space

?????

2006-07-21 07:30:01 · 1 answers · asked by ScienceNut 2 in Chemistry

cities in the U.S. that could be affected by volcanoes in the future?

2006-07-21 07:29:06 · 3 answers · asked by jeri w 1 in Physics

the distance of line basically uses pythagorean theorm. is there a way to solve this without using the sqrt function?

d = sqrt (dX^2 + dY^2)

2006-07-21 07:29:02 · 10 answers · asked by george_a_lutz 1 in Mathematics

2006-07-21 07:23:55 · 1 answers · asked by muaq 1 in Engineering

2006-07-21 07:23:32 · 15 answers · asked by tituspothiyil v 1 in Physics

2006-07-21 07:23:29 · 3 answers · asked by alruiz_perez 1 in Chemistry

before the big bang?

2006-07-21 07:20:20 · 7 answers · asked by flax342000 1 in Astronomy & Space

Why would some people seem shocked if you said looking at the stars is "looking at other people's suns?'

2006-07-21 07:20:06 · 12 answers · asked by Anonymous in Other - Science

I chose is National Aquarium in Baltimore is the best aquarium in nation.

2006-07-21 07:19:47 · 8 answers · asked by DXTRCHN11 6 in Other - Science

In your estimation, what is the probability of how many other earth like planets there are?

2006-07-21 07:16:59 · 25 answers · asked by Anonymous in Astronomy & Space

stops everything happening at once?

2006-07-21 07:13:58 · 18 answers · asked by Joey 1 in Other - Science

2006-07-21 07:11:47 · 14 answers · asked by dannyb 1 in Geography

2006-07-21 07:07:51 · 7 answers · asked by dannyb 1 in Geography

2006-07-21 07:07:15 · 9 answers · asked by sumir b 1 in Astronomy & Space

2006-07-21 07:06:50 · 21 answers · asked by Eik 1 in Other - Science

besides god and jesus's ppl...............

2006-07-21 07:01:27 · 14 answers · asked by audrey h 1 in Other - Science

What i mean is if time travel is successful in the future, then the people from the future should have come to see the past. But why hasn't anyone come??????

2006-07-21 06:59:43 · 24 answers · asked by Karthik Babu 1 in Astronomy & Space

2006-07-21 06:58:47 · 8 answers · asked by count alucard 5 in Mathematics

2006-07-21 06:58:34 · 3 answers · asked by Matt 1 in Other - Science

2006-07-21 06:55:28 · 3 answers · asked by augustron3 1 in Medicine