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A = pi* (15)^2  = about 706.86 square units.......

I trust Melody in MOST situations.......unfortunately, this isn't one of them.......

you cant

but you can trust melody, cant you?

and she said to write all digits of pi in roman numerals, so do it!

^ is a symbol representing exponents. for example, if it was 2^2, it would be 2*2, if it were 21*3, it would be 21*21*21

you can use this symbol in the calculator

done! no questions asked.

if the hypotenuse of a right triangle is 8.4 the adjacent is 6.1 and the opposite angle is 5.8 what is the tan ratio? i got 6.1 over 5.8 but the book says 5.8 over 8.4 

$$sin(A)=5.8/8.4$$

$$sin(B) =6.1/8.4$$

$$cos(A) = 6.1/8.4$$

$$cos(B) =5.8/8.4$$

$$tan(A)= 5.8/6.1$$

$$tan(B) = 6.1/5.8$$

The answer to your question is:  The tan ratio = 5.8/6.1!

But, if your book says that the ratio is 5.8/8.4 , then that MUST BE  the sine ratio, NOT the tangent!!!               

Sisyphus has returned to the "Triangle" to retrieve his results.......

Mmmm....now that I think about it......he HAS been gone awhile......!!!

{Can't trust those Illuminati members.......}

oh CPhill, we are still waiting...unlike the anonymous peeps, i always am waiting until you write all the digits of pi in roman numerals

you're welcome

Yes, that is correct   

$$\\0.\bar3=\frac{1}{3}\\\\
3*0.\bar3=3*\frac{1}{3}\\\\
therefore\\
0.\bar9=1\\\\\\
1-0.\bar9 = 1-1 = 0$$

This is given by 10^3.094  = about 1241.65

In general......take the derivative of the function, set it to 0 and solve........this wil give you the critical numbers......please realize that these may or may not be contained in the specified interval......

If the two legs are 6.1 and 5.8  the hypotenuse is √[(6.1)^2 + (5.8)^2]  = √70.85  =  about 8.4

So

sine = opp/hyp   = 5.8/8.4

cos = adj/hyp = 6.1/8.4 

tan = 5.8 / 6.1

V = (1/3)*pi* r^2 * h     where r is the radius at the base and h is the perpendicular height from the base

The tan ratio is: tanθ = opposite/adjacent

Am I right to assume that instead of opposite angle you mean opposite side?

In which case . . .

Hyp: 8.1

Adj: 6.1

Opp: 5.8 

tanθ = 5.8/6.1

(I find SOHCAHTOA really useful to remember the ratios . . .  Sin = 0/H  Cos = A/H Tan = O/A)

dejavu!

Yeah I also have the download version.

cos(a)  = x/r  = 2/3   ..... so.....

y = ±√[3^2  - 2^2]  = ±√[9 - 4]  = ±√5

So  tan (a)   = y/x  = ±√5/2

.45555.......  = [45 -4] / 90  = 41/90

Note that........

(1.00000....) - (.9999......)   = .(00000).....1  = .01    where the "bar" is over the "0'

{sorry.....I dont know how to insert the bar  !!!}

.434343...... =  43/99

.090909.....  = 9/99  = 1/11

.7777..... = 7/9

So .....(1/11) x (7/9) =  7/99

(1/3)⁴  =  (1/3)² * (1/3)²   =  (1/9) * (1/9)  = 1/81