"b" on e2020 is correct
Answer:
Step-by-step explanation:
d. -7/25
π<θ<3π/2 in third quadrant
tanθ = 4/3
sinθ = - 4/5
cosθ = - 3/5
cos 2θ = cos²θ - sin²θ = (- 3/5)² - (- 4/5)² = 9/25 - 16/25 = - 7/25
The rate of change is -2
f(b)-f(a) 12-2 10
---------- = ------------ = -------- = -2
b-a 1-6 -5
