Trigonometry Question

Question

The waves of a tsunami are 25ft high, 90 miles apart, and traveling at a rate of 540 miles per hour. How long does it take for the waves to complete one period?

Answer 1

90/540 = 9/54 = 1/6 hour = (1/6)(60) = 10 minutes = period

distance = speed times time

time= distance divided by speed

t= d/s = 90 miles/540 mph = 10 minutes