Answer:
1/10 per sec
Step-by-step explanation:
When he's walked x feet in the eastward direction, the angle Θ that the search light makes has tangent
tanΘ = x/18
Taking the derivative with respect to time
sec²Θ dΘ/dt = 1/18 dx/dt.
He's walking at a rate of 18 ft/sec, so dx/dt = 18.
After 3seconds,
Speed = distance/time
18ft/sec =distance/3secs
x = 18 ft/sec (3 sec)
= 54ft. At this moment
tanΘ = 54/18
= 3
sec²Θ = 1 + tan²Θ
1 + 3² = 1+9
= 10
So at this moment
10 dΘ/dt = (1/18ft) 18 ft/sec = 1
10dΘ/dt = 1
dΘ/dt = 1/10 per sec
Do you have any options of the equivalent expressions or is it just a plan question that you just asked?
Answer:
B
Step-by-step explanation:
Please Mark me brainly
hope this help
Answer:
Im pretty sure it's A because Z and AZ are collinear
Answer:
x > -10
Step-by-step explanation:
−7+2x>−27
Add 7 to each side
−7+7+2x>−27+7
2x > -20
Divide each side by 2
2x/2 > -20/2
x > -10
