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
Answer:
sczezsce dajiąm doibr estoni epwedutym jtata też jestszcz ę óścilwyt
Step-by-step explanation:
Answer:
42.29, 42.25, 42.32
Step-by-step explanation: