Ahhhhhhhh why are people so smart
The Pythagorean identity is
sin²Ф + cos²Ф=1
or
sin²Ф= 1- cos²Ф
Now in the problem we are given that
cos Ф=3/5
Now to find sin Ф, we can plug the value of cos Ф in the identity
So
sin²Ф= 1- cos²Ф = 1-(3/5)² = 1- 9/25 = (25-9)/25 = 16/25
Sin²Ф= 16/25
take square root on both sides
Now when we take square root on both sides we have to always remember that we will get one positive and one negative answer
So
Sin Ф = 4/5 or -4/5
One way to write a ratio is 5:8 or 5 to 8 and <u>5</u>
8
Answer:
Pepperoni placement caused the difference in customer ratings
Step-by-step explanation:
Random assignment of the pepperoni placement for each customer makes this study an experiment, so we can make causal conclusions.
