Factor completely 3x2 + y.
2 answers:
Answer: The factorised form would be (3x²+y) itself.
Step-by-step explanation:
Since we have given that
We need to find the factorisation of the above expression:
There are two terms:
1) 3x²
2) y
Factors of 3x² = 1,3,x,x
Factors of y = 1,y
As we can see that there is no common factor between them.
So, it can't be factorised any more .
So, the factorised form would be (3x²+y) itself.
You might be interested in
Answer:
y intercept (0, 4)
x intercept (4, 0)
I hope this is good enough:
Answer:
So 67 degrees is one value that we can take the sine of such that is equal to cos(23 degrees).
(There are more values since we can go around the circle from 67 degrees numerous times.)
Step-by-step explanation:
You can use a co-function identity.
The co-function of sine is cosine just like the co-function of cosine is sine.
Notice that cosine is co-(sine).
Anyways co-functions have this identity:
or
You can prove those drawing a right triangle.
I drew a triangle in my picture just so I can have something to reference proving both of the identities I just wrote:
The sum of the angles is 180.
So 90+x+(missing angle)=180.
Let's solve for the missing angle.
Subtract 90 on both sides:
x+(missing angle)=90
Subtract x on both sides:
(missing angle)=90-x.
So the missing angle has measurement (90-x).
So cos(90-x)=a/c
and sin(x)=a/c.
Since cos(90-x) and sin(x) have the same value of a/c, then one can conclude that cos(90-x)=sin(x).
We can do this also for cos(x) and sin(90-x).
cos(x)=b/c
sin(90-x)=b/c
This means sin(90-x)=cos(x).
So back to the problem:
cos(23)=sin(90-23)
cos(23)=sin(67)
So 67 degrees is one value that we can take the sine of such that is equal to cos(23 degrees).
