Do Now: A safety regulation states that the maximum angle of elevation for a rescue ladder is 72 degrees. If a fire department’s longest ladder is 110.

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Presentation transcript:

Do Now: A safety regulation states that the maximum angle of elevation for a rescue ladder is 72 degrees. If a fire department’s longest ladder is 110 feet, what is the maximum safe rescue height?

Academy Algebra II/Trig 7.3 word prob: Applications & Models (PC 4.8) Hw: p.538 (62-65 all, 67, 71)

Example: At a point 200 feet from the base of a building, the angle of elevation to the bottom of a smokestack is 35 degrees, and the angle of elevation to the top is 53 degrees. Find the height s of the smokestack alone.

Example: A swimming pool is 20 meters long and 12 meters wide. The bottom of the pool has a constant slant so that the water depth is 1.3 meters at the shallow end and 4 meters at the deep end. Find the angle of depression of the bottom of the pool.

Pre-Calc Textbook: p.362 (20)

Ac Alg II Book: p.538 #63 Suppose that you are headed toward a plateau 50 meters high. If the angle of elevation to the top of the plateau is 20o, how far are you from the base of the plateau?