Answer:
15/40 = 3/8
Step-by-step explanation:
numerator x numerator & denominaror x denominaror
Answer:
32
Step-by-step explanation:
let me know if that was correct
Answer:
Step-by-step explanation:
its c for sure i got it right on a test
By using The half-angle formula
cos X/2 = ±√[(1 + cos X)/ 2]
But we have cos x=2/3
= ±√[(1 + 2/3)/ 2]
= ±√[(5/3 )/ 2]
= ±√[(5/5]
=±√1
Therefore answer is ±1
cos A/2 = ±√[(1 + cos A )/ 2]
