S=-1 see attachment for explanation
Cos 45=7 under root 2 /AB
1 / Under root 2 = 7 under root 2 / AB
AB=14
Ans = 14(b)
Answer:
2
Step-by-step explanation:
When you "flip" the fraction, switching the numerators and denominators, you get 2/1 which is just 2.