Which of the following are solutions to the equation cos^2 2x-1/4=0? Check all that apply.
1 answer:
Answer:
D
Step-by-step explanation:
Cos^2 2x=1/4
Cos 2x =+-1/2
2x=z
Cos z=+-1/2
z1=pi/3
z2=11pi/3
z1 and z2 are possible.
x1=pi/6
x2=11pi/6
You might be interested in
A=b*h
456=24*h
h=456/24
h=19
Height would be 19 inches
Answer:
16.6
Step-by-step explanation:
I think it’s 5 square yards I’m not sure though
Answer:
20
Step-by-step explanation:
6,460 divided by 323 = 20
Answer:
she can purchase 5 cheesecakes
Step-by-step explanation:
15.99*5=79.95
if we add 9.99 for the shipping of thw whole order
79.95+9.99=89.94