Note  .... 1400 watts = 1.4kw

[1.4 kw  x 16 hrs.  x .09/kwhr]  =  about $2. 02 

Glad I  put a smile on you face, MG.......this certainly doesn't apply to you......you're one of the best young learners we have on here   ...    You will probably be teaching ME, one day......!!!!!

Not necessarily........note  this.....

Triangle ADC is the 180° rotation of  the "supposed" right triangle ABC. Note that a parallelogram is formed - not a rectangle. The "hypotenuse" of each triangle - AC - is actually the diagonal of the parallelogram......!!!!

However, if  ABC were a right angle....your supposition would be true.......a rectangle would be formed and the diagonal of this rectangle would be the two equal hypotenuses of both triangles.

I think you mean.....

tan-1( - √3 / 3)  = -30°  = -pi/6 rads

{Note  .... this could also be an angle in the second quadramt, i.e., 5pi/6 rads }

A = 8000(2.718)^.06*5 = $ 10798.53

y = 7x - 11   add 11 to both sides

y + 11  = 7x    divide both sides by 7

[ y + 11 ] / 7  = x     "swap" x and y

[x + 11 ] / 7  = y       for y,  write  "f^-1(x)"       {signifying the inverse function}

[x + 11 ] / 7  =  f^-1(x)

Unless  the word "FIG" precedes it......

Then....

It's something you dunk into a glass of milk.......

As "forcefully" as you wish........!!!!

East Tgers

North Tigers

South Tigers

West Tigers

Unspecified Generic Compass Points Tigers.......

NO, MELODY.....

WE WANT ANSWERS......RIGHT NOW   !!!!!!

WE DON'T WANT TO "GOOGLE,"  BECAUSE, THEN,......WE WOULD HAVE TO TAKE AN ACTIVE PART IN LEARNING.......AND THAT'S.........

TOO  MUCH  TROUBLE.........!!!

SO.....

GET UP OFF YOUR AUSTRALIAN BEE-HIND  ....  AND  .....

ANSWER MY D**N QUESTION......

RIGHT NOW  .....!!!!!

Notice that  "y"  might take on two values here...  ±12  ...depending upon the quadrant in which the angle lies........

So........

sinΘ cosΘ  = ( ±12 / 13 ) (5 / 13) =  ±60 / 169