AzizHusain

2/k - 18 = 1/k

-18 = 1/k - 2/k

-18 = -1/k

-18k = -1

k = -1/-18

k = 1/18.

tan theta = sin theta / cos theta

sin theta / cos theta = 1

sin theta = cos theta

If sin theta < 0, then cos theta must be equal to sin theta in order for tan theta to equal 1.

2 cos x = -1

cos x = -1/2

We would be looking at the 2nd quadrant...x has to be 120 degrees or 2pi/3.

1000 is the same as 10*10*10 or simply 10 to the third power, 10³.

sqrt(180)

= sqrt(9*4*5)

=sqrt(9)*sqrt(4*5)

= 3*2*sqrt(5)

= 6*sqrt(5)

= $$\mathbf{6\sqrt{5}.}$$

x^2 = ? [Need more information]

How much tax?

Seems like it would be so small...0% chance...!

Oh, I thought it over too much! Nice, Melody! 

54.2 cm² X 22 cm = 1192.4 cm³.