Answer:
Step-by-step explanation:
ΔPQS, ΔRQP and ΔRPS are similar (AA). Therefore the sides are in proportion:
We have:
Substitute:
<em>cross multiply</em>
Use the Pythagorean theorem:
Substitute:
The only values a cosine can have are from -1 to 1.
Answer:
slope 4
y intercept 0, 4
Step-by-step explanation:
Answer:
1?
Step-by-step explanation: