Answer:
12
Step-by-step explanation:
Use the Pythagorean theorem, a² + b² = c², where a and b are legs of the right triangle and c is the hypotenuse.
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6185152673 For the second question and 0/0 is unknown for now
Equal to
The angle of depression from object A to object B is always Equal to the angle of elevation from object B to object A.
It was in the notes in slide 7 in the bottom