Recall that
sin²(<em>θ</em>) + cos²(<em>θ</em>) = 1
for all <em>θ</em>, and given that cos(<em>θ</em>) < 0, we find that
cos(<em>θ</em>) = -√(1 - sin²(<em>θ</em>)) = -√(1 - (2/5)²) = -√(21)/5
Now,
csc(<em>θ</em>) = 1/sin(<em>θ</em>) = 1/(2/5) = 5/2
and
cot(<em>θ</em>) = cos(<em>θ</em>)/sin(<em>θ</em>) = (-√(21)/5)/(2/5) = -√(21)/2
Question 1: x+2 = 8 doesn't belong in the given equations.
Question 2: The possible values for y are 0,1 and 2
Step-by-step explanation:
Question: Which one doesn't belong?
We will solve each equation one by one to get which equation doesn't belong with others
So,




Hence,
x+2 = 8 doesn't belong in the given equations.
Question 2:
Given equation is:

It is given that the values of x will be greater than 2 and less than 6 so values of x can be 3,4 and 5
So,

Hence,
The possible values for y are 0,1 and 2
So,
x+2 = 8 doesn't belong in the given equations.
The possible values for y are 0,1 and 2
Keywords: Linear equation, variables
Learn more about linear equations at:
#LearnwithBrainly
Answer:
yes
Step-by-step explanation:
Change the second equation into slope-intercept form: y+3=-3(-x+2)
Distribute the -3: y+3=3x-6
Isolate the y: y=3x-6-3
Simplify: y=3x-9
Since they have the same slope, they are parallel
(10 pounds) - (7 pounds 3 ounces) =
2.8125 pounds