Let's check.
x = 5π/24
4x = 5π/6
cos 4x = cos(5π/6) = cos 150° = -√3/2
cos² 4x = (-√3/2)^2 = 3/4
4 cos² 4x -3 = 4 (3/4) - 3 = 0
Answer: TRUE
True because they have the same size angles
4 times 3.14 times 8 squared
803.8
Answer:
.47
Step-by-step explanation:
1/10= .1
0.0.47/.1=.47
-1 x .47=0.47
