Melody

Mmmm Interesting Chris. 

I am sure there is a great anser to that but I do not know what it is.

Pity reinout-g is not logged on. I am sure he would have a good answer for you. 

You can't find the tangent of a number.  The question doesn't make sense. 

asine is the same as as sin^-1

Sin^-1 is read as inverse sine

asin stands for arcsine

They are the same thing.

I'm awesome too!

You drop a penny from the top of the Giant Drop which is 61.6 m tall. What is the velocity of the penny when it strikes the ground (ignore air resistance)?

Accel = 9.8m/s², original velocity=0, original displacement=61.6

$$\ddot y = -9.8m/s\\\\
\dot y = -9.8t\\\\
y= \frac{-9.8t^2}{2}+61.6\\\\$$

Find t when y=0

$$-61.6\times2=-9.8t^2\\

t\approx 3.545621042$$

$$\dot y = -9.8\times 3.545621042
=-34.747$$

so the coin will hit the ground with a downward velocity of 34.7 m/s

If you don't understand some of the steps let me know.  There could easily be some silly errors. 

It is strange wording but real numbers can be

Cardinal numbers 1,2,3,4,5,...Whole positive counting numbers

Integers -8,-5,0,6    Whole numbers positive or negative

Rational numbers

Irrational numbers

There are many other sub groups as well, fraction, decimal, percentages, odd, even ,prime etc

does this  help?

As CPhill said,

35% = 35/100 = 0.35

you can think of dollars and cents if you want.  Which is more 0.35  or 0.40?

$$3>\frac{-1}{2}\times4+5\\\\
3>-2+5\\\\
3>3\\\\$$

Thsi is FALSE  

3 IS NOT GREATER THAN 3

Hi all,

Great answers today from CPhill, SpawnofAngel, Alan, Bertie and Kitty<3.

The bugs are slowly being erradicated from the picnic that is web2.0calc forum.  Hopefully the members section and private messaging will be working soon.  I am also hoping that we will be able to post attachments in the not too distant future.

That is it for this Tuesday/Wednesday.

Melody