I’m not sure I’m just guessing but maybe 7x minus 35
Answer:
- AC is congruent to CE
- BG is congruent to DG
- BH is congruent to DF
Step-by-step explanation:
AC is congruent to CE because of the 2 congruent tick marks.
BG is congruent to DG because of the 1 congruent tick mark for each segment.
BH is congruent to DF because of the 3 congruent tick marks for each segment.
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]