Answer: 2 rays that meet an endpoint
||cu|| = |c| * |u| = c[ magnitude of vector sum of 5i + 12j ] = 3sqrt(5^2 + 12^2)
= 3sqrt(169) = 3(13) = 39 (answer)
Answer: 8/15, 15/8
Step-by-step explanation:
By the Pythagorean theorem, the length of the unknown side is

So, the tangents of the acute angles are 
Answer:B AB ≅ DE
Step-by-step explanation:
Since the triangles are congruent and AB and DE are the same line on both triangles they’re the same.