Answer:
B
Step-by-step explanation:
Answer:
divide 6 by 5 your answer is 1.2
Answer:
Use Distance Formula
Step-by-step explanation:
You can find the distance between two points by using the distance formula which by definition is 
For example take question 3. Plug your point values in to find the distance
Point 1 is (-1, 8)
Point 2 is (-3, -2)
You equation would look like:
This simplifies to 
=
=
=
=
That is the distance between the points (-1, 8) and (-3, -2)
Answer:
102 104 106 ez pz lemon squeezy, jk i used a ti-89
Answer:
+√[(2 - √3)/4]
Step-by-step explanation:
Here is the complete question
How do you find the exact values of cos(5pi/12) using the half angle formula?
Solution
The half-angle formula is
cos(θ/2) = ±√[(1 + cosθ)/2]
if cos(5π/12) = cos(θ/2) ⇒ θ/2 = 5π/12 ⇒ θ = 5π/6
So, θ = 5π/6 × 180/π = 150°
Cos150 = cos(180 - 30) = -cos30 = -cosπ/6 = -√3/2
So, cos(5π/12) = ±√[(1 + cos5π/6)/2]
= ±√[(1 + (-cosπ/6))/2]
= ±√[(1 - cosπ/6)/2]
= ±√[(1 - √3/2)/2]
= ±√[(2 - √3)/2 ÷ 2]
= ±√[(2 - √3)/4]
Since 5π/12 = 5π/12 × 180/π = 75° which is in the first quadrant, so
cos(5π/12) = +√[(2 - √3)/4]. We ignore the negative answer
