Answer:
See Below.
Step-by-step explanation:
We want to verify:

We will utilize the following identities:

And:

So, by substitution, we acquire:

Distribute:

The first and third term will cancel:

Combine like terms:

Step-by-step explanation:
TanA = SinA/CosA
tanA = 2xy / (x² + y²),
Sin A = CosA * 2xy / (x² + y²)
56/125-177/625= 280/625 - 177/625 = ( 280 - 177 ) / 625 = 103 / 625 = 0.1648
Answer:
Is it statement 3? It looks like it doesn't belong.
5.1 ANSWERS.pdf
2. Page 3. Practice: Use your calculator to sketch a graph of each