2cos^2 x = 1 + cos 2x
cos^2 x = 1/2(1 + cos 2x)
f(x) = 6cos^2 x - 4 sin 2x = 6(1/2(1 + cos 2x) - 4 sin 2x = 3 + 3cos 2x - 4sin 2x
Answer:
y =-2 x=0
Step-by-step explanation:
put any number on x to find y
question one
1, 2, 3, 4, 5, 6
question two
3/6 or 1/2
question three
3/6 or 1/2
question four
2/6 or 1/3
question five
4/6 or 2/3
you use the list from question one, and count how many fit the criteria and put that number over the total ( which is 6 in this case )
Area=pi times radius^2 so
if area=4pi=pi times r^2
4 times pi=r^2 times pi
divide both sdies by pi
4=r^2
square root
2=radius since legnth cannot be negative
radius=1/2 diamters
2 radius=diameter
2(2)=diameter=4
diameter=4
The length of side A in centimeters is 6cm
D. 6
