Attachment attached below
please help with this, THANK YOU

The answer to your question is  sin 3π/2 = -1  and cos 3π/2 = 0

Step-by-step explanation:

Convert 3π/ 2 to degrees

                    π   180°

                  3π/2  x

                    x = (3π/2 x 180)/π

                   x = 270°

In the third quadrant we must look for this information

 sin Ф = opposite side/hypotenuse

 sin 3π/2 = -1/1 = -1

cos Ф = adjacent side/ hypotenuse

 cos 3π/2 = 0/1 = 0

hypotenuse always measures 1 in the unit circle.

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!