Answer:
4.86
Step-by-step explanation:
The function f(t) denotes the height of a specific seat on a Ferris wheel above the ground level at time t.
The function is f(t) = 20 Sin 10t +25 ...... (1)
It is asked in the question that at what time a person riding at least 40 feet in the air.
Hence, we can write, 40= 20 Sin 10t +25
⇒ 20 Sin 10t =15
⇒ Sin 10t = 15/20
⇒ 10t = Sin⁻¹ (15/20) =48.59
⇒ t = 4.86 (Approximate) (Answer)
