Given :
An expression (cos 6m)(cos 2m) .
To Find :
We need to express it in terms as sum or difference.
Solution :
We know,
cos( A + B ) = cosA cos B - sin A sin B
cos( A - B ) = cosA cos B + sin A sin B
Adding both the equations we get :
2cos A cos B = cos( A + B) + cos( A - B )
or
cos A cos B = cos( A + B) + cos( A - B )/2
Putting value of A = 6m and B = 2m in above equation, we get :
(cos 6m)(cos 2m) = cos( 6m + 2m ) + cos( 6m - 2m )/2
(cos 6m)(cos 2m) = cos(8m) + cos(4m)/2
Hence, this is the required solution.
Answer:
1. m=4/9
2.m=-26/7
3.m=0
Step-by-step explanation:
Formula: Y=mx+b
1.y
=
4
/9
x
−
25
/9
2.y
=
−
26
/7
x
+
452
/7
3.y=17
✨Hope this helps!✨
Answer: 6x^2 - 23x + 20
Step-by-step explanation:
To find the area of a rectangle you multiple length times width.
(3x-4)(2x-5)
Use foil to distribute the terms:
6x^2 -15x-8x+20
combine like terms
6x^2 - 23x + 20
I do not see a list of options so I can not tell you what letter answer this lines up with but this is the answer.
29440 divided by 2 equals 14,720
