The length of AB in the triangular prism is 6.58 cm.
How to calculate the length of AB?
The length of AB in the triangular prism is calculated by applying the following formula as shown below;
Length EC is equal to length FB = 15 cm
The length of AB is calculated by applying trigonometry ratio;
sin (θ) = opposite leg / hypothenuse side
The opposite leg of the right triangle = AB
The hypothenuse side of the right triangle = 15 cm
sin (26) = AB / 15 cm
AB = 15 cm x sin (26)
AB = 6.58 cm
Thus, the length of AB in the triangular prism is 6.58 cm.