All Answers 358600 Answers

Human life is just an experiment conducted by white mice.

To worship God.

You have the calculator set to "degree" mode......change it to "radian" mode [at the bottom left] and you should get the correct result

The patttern here is adding 1/4 to each number.

Your number line's order is...

0, 1/4, 1/2, __, 1

To make this a tad easier just say 1/2 is 2/4.

0, 1/4, 2/4 __, 1

Now that you can see the pattern, the answer is clear as day.

2 degrees I think...

I answered this one [ in radians], here : http://web2.0calc.com/questions/find-the-exact-value-cot-1-2sin-300#r1

So....   - pi/6   =   -30°

The answer is 2318008 viewed upside down. If gay this should not make sense. If not then welcome to the club.

Oops.....I forgot that you were asking about an infinite series......!!!

The sum, S, is given by :

S =  a / ( 1 - r)     where "a" is the first term  and "r "  is the common difference between terms....of course, the series must be convergent to produce a finite sum.......[ i.e., the common difference must be between -1  and 1]

This looks like a problem involving the Law of Cosines  .....

MN  = sqrt [ 30^2+25^2-2(30)(25)cos(77) ]  = about 34.46

Whoops! 

I meant:

x+x-x*x/x= 1,

x+x-x*x/x=x

I know, I just wanted to show evreyone the cool output.

I can help you with Washington Sales Tax. 

Washington's State sales tax is 6.5%, so all you have to do is take the original amount, 945, and multiply it by 6.5%

945*6.5% = 61.425

Now, add that to 945.

61.425+945 = 1006.425, or approximately $1006.43.

It's a cylinder....and the volume of a cyinder  =  pi * radius^2  * height

The radius, in this case = 2.5/2   = 1.25 in

So

Volume  =  pi * 1.25^2 * 5   = about   24.5 in^3

We'd have to know the tax rate to determine this......

"Of" means "multiply"   .......so we have....

13% of 333  =

13% x 333  =

.13 x 333  =

43.29

35000 x 2000  =

[3.5 x 10^4]  *  [ 2 x 10^3]  =      [we can multiply in any convenient order]

[3.5 x 2] * [10^4 x 10^3]  =

7 x  10^7

As you have it wriiten, Shades, it's not an identity.....I think it's supposed to be....

[cot^2 x + sec^2 x + 1] / cot^2 x = sec^4 x      break the left side up into sines/cosines

[cos^2x/sin^2x + 1/cos^2x + 1 ] / [cos^2x / sin^2x]  =

[ cos^2x/sin^2x + 1/cos^2x + 1] * [ sin^2x/ cos^2x]  =  [ distribute the term in the 2nd brackets]

[1 + sin^2x/cos^4x +  1* (sin^2x / cos^2x)]

1 + sin^2/cos^4x + tan^2x  =

1 + tan^2x  + sin^2x/cos^4x             [1 + tan^2x   = sec^2x]

sec^2x + sin^2x/cos^4x                  [sec^2x = 1/cos^2x]

1/cos^2x + sin^2x/cos^4x               [ get a common denominator of cos^4x]

[cos^2x]/cos^4x + sin^2x/cos^4x =

[cos^2x + sin^2x]/ cos^4x  =

[1] / cos^4x  =

sec^4x         and this =  the right side

42!!!!

4.58333333 (and on and on)

thank you CPhill.

sin(300°)  = -sqrt(3)/2

So

2sin(300°)  =

2 [-sqrt (3) / 2]  = -sqrt(3)

So

cot^-1 [-sqrt(3)]  =  -pi/6

The volume of the pool = (25 *15 * 3)  =  1125m^3

The density of water  = about 999kg/m^3  

Mass  = density  * volume  

Mass = [999kg/ m^3] * [1125m^3 ] =  about 1,123,875 kg

-2(-1)(3)(-1)  =

(-2) (-1)   *  (3)(-1)  =

2 *  -3   =

-6