Answer is 2x^+3x-3 with reminder 4
You should suck a long rod and the answer is around 50 minutes
The answer is approximately 8.1
Cos Ф - cos Ф.sin² Ф
sin² Ф = 1 - cos² Ф
cos Ф - cos Ф( 1-cos² Ф) = cos Ф - cos Ф - cos³ Ф = cos³ Ф
cos Ф - cos Ф.sin² Ф = cos³ Ф
138.43-19.99=118.44
118.44/0.94=126.
Hope this helps :)