Answer:

Step-by-step explanation:

Answer: 2 2/3 (two and two thirds)
10|5n-5|=50 divide both sides by 10
|5n-5|=5 square both sides:
25n^2-50n+25=25 subtract 25 from both sides
25n^2-50n=0 factor...
25n(n-2)=0
So n=0 and 2
A) sin ( 4π/3 ) = sin 240° = sin ( 180° + 60°) = - sin 60° =

b) cos (5π/6 ) = cos 150° = cos ( 90° + 60° ) = - sin 60°=