CASE STUDY 3 A boy is standing on the top of light house. He observed that boat P and boat Q are approaching the light house from opposite directions. He finds that angle of depression of boat P is 45° and angle of depression of boat Q is 30°. He also knows that height of the light house is 100 m. Based on the above information, answer the following questions. (i) What is the measure of ∠APD? (ii) If ∠YAQ = 30°, then ∠AQD is also 30°, Why? (iii) Find length of PD OR Find length of DQ
