Subsiutte
x,y
-10,-8
-9,-7
-8,-6
-7,-5
-6,-4
-5,-3
-4,-2
-3,-1
-2,0
-1,1
0,2
1,3
2,4
3,5
4,6
5,7
6,8
7,9
8,10
9,11
10,12
Answer:
Step-by-step explanation:
Lets remember the following expression:
cos(x-a)= cos(x)*cos(a)+sin(x)*sin(a)
if a= -3 pi /2 then:
cos(x-3 pi/2)= cos(x)*cos(3pi/2) + sin(x)*sin(3pi/2)
Since cos (3pi/2) is located exactly at 'y' axis, its value=0
Moreover sin(3pi/2)= -1 because, that angle is located at 'y' axis, negative side
cos(x-3pi/2)= -sin(x)
But, we can simplify a little more since we now that tan(x)=3/4
That means that sin(x)/cos(x)= 3/4, from that expression we isolate sin(x) and we obtain that sin(x)=cos(x) * 3/4
Using the above conclusion we have that
cos(x-3pi/2)= -cos(x)*3/4
Answer:
Step-by-step explanation:
Adjacent to the undetermined angle is 6, and the hypotenuse has been given. We can conclude, after looking at our SOHCAHTOA, that we will be using cosine(CAH) to solve this problem.
Let the unspecified angle be (This sign is called theta, which is just a sign for angle)
Lets start!
cos = adj/hyp
cos = 6/13
= (6/13)
= 62.5
= 63
Hope that helped!
Answer:
where is the chart?
Step-by-step explanation:
I will come back to this but how much time do you need to answer this?