Answer:
Answer in the file
Step-by-step explanation:
Pls vote my answer as brainliest
i think the answer is 51
256m
not 100% sure but i hope this helps :)
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
