Answer:
f(1) = √(4*1) = √4 = 2
The point (1, 2) is only on the third graph.
Answer: see attachments
<u>Step-by-step explanation:</u>
Use Pythagorean Theorem to find the missing side (x² + y² = h²)
Use the following formulas to find the trig functions:

Um 100 idk BUT IM JUST ANSWERING