Question

Relate ratios in right triangles
Consider right triangle ADEF below. Which Expressions are equivalent to cos(E)?

Answer 1

Answer:

B

Step-by-step explanation:

Cos is the adjacent side over the hypotenuse.  The adjacent side to <E is side ED.  The hypotenuse is side EF.  ED/EF.  They do not go right out and give you this choice, but you see that B says the same thing.