To find the length of AB, we can use the cosine formula in a right-angled triangle.
Given: Cos A = 0.75
Cos A = Adjacent Side / Hypotenus0.75 = AB / √AB = 0.75 √AB = √73/AB = 3√7 / 4
Therefore, the length of AB is 3√7 / 4.
To find the length of AB, we can use the cosine formula in a right-angled triangle.
Given: Cos A = 0.75
Cos A = Adjacent Side / Hypotenus
0.75 = AB / √
AB = 0.75 √
AB = √73/
AB = 3√7 / 4
Therefore, the length of AB is 3√7 / 4.