Part D - ApplicationFull marks will be given only for if all steps are shown [APP - 15 marks] 1. The water level at an ocean inlet has a depth, d, in metres, that varies with the time, t, in hours after midnight, (-4) 12.4 + 6. What is the water depth at 2:30 a.m., to the nearest hundredth according to the equation d-5 sin 2x of a metre? 2. When a pendulum 0.5 m long swings back and forth, its angular displacement from rest position, in radians, is given by 0(t)=sin, where t is the time, in seconds. At what time(s) during the first 4 s is the pendulum displaced 1 cm vertically above its rest position? (Assume the pendulum is at its rest position at t = 0.) ✓ ✓ ✓

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