It's probably the first one: "People responded to Earth Day with letters..."
Since it's more of a detail that supports a fact, it's not as important as the other three.
Answer:
C) 100º
Step-by-step explanation:
It is the same as the first triangle and in the first triangle that angle is 100º
Work is all listed below:
1) -1/6 - 3/6 = -4/6 = -2/3
2) 8/12 - 2/12 = 6/12 = 1/2
3) 4/7 - 1/4 = 16/28 - 7/28 = 9/28
Answer:
t0 = π/4
Step-by-step explanation:
The velocity v(t) = r'(t) = <-2sint,-2cost>
Since <1,-1>⊥v, <1,-1>•v=0. So,
(1)(-2sint) + (-1)(-2cost) = 0
cost - sint = 0
10 times less. I hope it helps
