It would be D 2 if you take each placement of dots and find the differ by multiply or divide that should get you the other hard to explain but ya
The line is supposed to be straight sorry mine is not straight I couldn’t find my ruler.
By the Pythagorean theorem, the missing side is -sqrt7. The definition of sin is side opposite over hypotenuse, so go into Q2 and make an angle and label the side opposite the angle with a 3 and the hypotenuse a 4. The other leg is -sqrt7 cuz x is negative in Q2. The cosine of an angle is the side adjacent over the hypotenuse, so the cos then is -sqrt7/4
