Cos2x = 2cos^2 x-1 = 3/4
2cos^2x = 3/4 +1 = 7/4
cos^2x = 7/8
Taking square root
cosx = 0.93541
x = 20.705
Hope this helps
He looked uninterested in the speech given by the principal, furthermore he was having a conversation with the person sitting next to him.
Furthermore, the group of students decided to protest to change the new rule their school made.
