Answer:
It makes 360 / 60 = 6 revolutions per second. 6 revolutions is 12π radians.
It is 6 1/4!
HOPE I HELPED!
First let's find the angles a and b.
We have then:
sin a = 4/5
a = Asin (4/5)
a = 53.13 degrees.
cos b = 5/13
b = Acos5 / 13
b = 67.38 degrees.
We now calculate cos (a + b). To do this, we replace the previously found values:
cos ((53.13) + (67.38)) = - 0.507688738
Answer:
-0.507688738
Note: there is another way to solve the problem using trigonometric identities.
Answer: The inverse is f^-1 (x) = x - 11