Respuesta :

Step-by-step explanation:

cos(57)=x/15

  • 0.544×15=x
  • x=8.16

stay safe healthy and happy.

Answer:

If you mean 57 degrees then the answer is 8.1695...

If you mean 57 radians then the answer is 13.498...

Step-by-step explanation:

Isolate the x by multiplying 15 on both sides

15 x cos(57) = x