4 cos² x - 3 = 0
4 cos² x = 3
cos² x = 3/4
cos x = ±(√3)/2
Fixing the squared cosine doesn't discriminate among quadrants. There's one in every quadrant
cos x = ± cos(π/6)
Let's do plus first. In general, cos x = cos a has solutions x = ±a + 2πk integer k
cos x = cos(π/6)
x = ±π/6 + 2πk
Minus next.
cos x = -cos(π/6)
cos x = cos(π - π/6)
cos x = cos(5π/6)
x = ±5π/6 + 2πk
We'll write all our solutions as
x = { -5π/6, -π/6, π/6, 5π/6 } + 2πk integer k
Answer:
y=231x
Step-by-step explanation:
To get y by itself just subtract 2 from both sides so, y=231x
Answer: A
Step-by-step explanation:
X=1
Answer:
20
Step-by-step explanation:
look at picture and you can add all the numbers becuase i counted the sides
Answer:
6 buckets have to be filled, put in tank and refilled.
Step-by-step explanation:
Volume = 24 L
Volume Container = 4 L
Number of buckets = Fish Tank Volume / volume of container
Number of buckets = 24 / 4
Number of bucket refills = 6
