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
Hopes this helps:
Answer: 9
Answer:
or
Step-by-step explanation:
To find a fraction of a fraction simply multiply the numerators and denominators into another fraction:
Answer:
7/16 0.4375
Step-by-step explanation:
7 divided by 16
Answer:
49% probability that Mitchell will be a goalie today
Step-by-step explanation:
Coach White coaches with 70% probability. So 70% of the time, there is a 55% probability that Mitchell is the goalie.
The other 100-70 = 30% of the time, 35% probability that Mitchell will be the goalie.
What is the probability that Mitchell will be a goalie today?
49% probability that Mitchell will be a goalie today