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
Answer:
i thin the answer is i dont even know
Step-by-step explanation:
soln
given,
f(x) = 1
Now,
f(x) = 4x+11
or, -1 =4x +11
or,4x = 11+1
or, 4x = 12
or, x. =12/4
or x. = 3
Therefore, The value of x is 3.
Answer:
Step-by-step explanation:210 games
14+13+12... (x2)
