6. Classify each angle in the diagram as an angle of elevation or an angle of depression. The dotted lines are lines of sight. a) Angles of elevation: Z1, Z3 Angles of depression: 2, 24 b) Angles of elevation: 2, 4 Angles of depression: Z1, 23 c) Angles of elevation: Z1, Z4 Angles of depression: 2, 23 d) Angles of elevation: 2, 23 Angles of depression: Z1, 24

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