Answer:
When i took it i chose C and was right. I'm not sure if we use the same school but it was my answer. Hope it helps.
Step-by-step explanation:
Answer:
cos90* = 0.
Step-by-step explanation:
Look up the unit circle or type it into your calculator
Rational ! the number doesn't repeat forever or anything like that. it simplifies nicely.
Answer:
$16
Step-by-step explanation:
1/4x4=1
So 4x4 = 16