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Problem

Hyun Woo is riding a ferris wheel. H, left parenthesis, t, right parenthesis models his height (in m) above the ground, t seconds after the ride starts. Here, t is entered in radians.
H, left parenthesis, t, right parenthesis, equals, minus, 10, cosine, left parenthesis, start fraction, 2, pi, divided by, 150, end fraction, t, right parenthesis, plus, 10
When does Hyun Woo first reach a height of 16, space, m?
Round your final answer to the nearest whole second.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
seconds
Do 4 problems