# Question

(a) Find the amplitude, period, and phase shift of y = 3sin[π(x – 1/3)]

(b) A ladder leans against a verfical wall of a building so that the angle between the ground and the ladder is 72° and its bottom on the ground is at 3m from the wall. How long is the ladder? How high does it reach?

(b) A ladder leans against a verfical wall of a building so that the angle between the ground and the ladder is 72° and its bottom on the ground is at 3m from the wall. How long is the ladder? How high does it reach?

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