Answer:
LHS=cos^4(A/2)-sin^4(A/2)
={cos^2(A/2)}^2 -{sin^2(A/2)}^2
={cos^2(A/2) - sin^2(A/2)}{cos^2(A/2) +sin^2(A/2)}
=cosA×1
=cosA
Some shopping carts have three wheels.
Just think what do all the numbers have in common? What number can relate to all of them and is the largest number? That's how you find GCF, straight of the bat I can see that the GCF is 5 because nothing higher than five can match up to all of them, in other words nothing other than 5 or higher than 5 is a factor of all the numbers.
Answer:
4 inches per second
Step-by-step explanation:
Speed = distance/time
Given
Distance = 20 feet
12 inches = 1 foot
X inches = 20 feet
X = 20 x 12 = 240 inches
Time = 1 minute = 60 secs
Therefore
Speed = 240/60
= 4 inches per second
Answer:
D
Step-by-step explanation:
