∠1 is an angle formed by the two lines PF and YF at point F
We can also call this angle as ∠PFY because it indicates the point F in the middle where the angle is formed
We can call this angle as ∠YFP because it also indicates the point F in the middle where the angle is formed
we can also call this angle ∠F since F is the point where the angle is formed.
Correct answer: ∠PFY, ∠YFP, ∠F
Answer: 75
Step-by-step explanation:
Multiple all those numbers together and then divide by 3
Answer:

Step-by-step explanation:

Cos -2x or -cos2x, it's the difference.