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TrigonometryWorkPlan_03

# TrigonometryWorkPlan_03 - Week3 LECTURE I a i SineFunction...

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TRIGONOMETRY WORKPLAN Week 3 LECTURE I. Trigonometric Functions a. Trig Functions of a Right Triangle i. Sine Function 1. sinA = opposite/hypotenuse = a/c ii. Cosine Function 1. cosA = adjacent/hypotenuse = b/c iii. Tangent Function 1. tanA = opposite/adjacent = a/b iv. Cosecant Function 1. cscA = hypotenuse/opposite = c/a v. Secant Function 1. secA = hypotenuse/adjacent = c/b vi. Cotangent Function 1. cotA = adjacent/opposite = b/a a. Ex. Doug’s golf cart is having a problem. It can’t go up an incline that’s steeper  than 30 degrees. He wants to drive it up a ramp to the top of a 40 foot high  platform. How long a ramp will he need?  Ans. 80ft b. Ex. Jim and Jane are walking east toward the main road. Jane decides to cut  diagonally to the north at an angle of 30 degrees north of east. Jim continues on  for the last 20 feet to the road. How far apart are they when they both reach the  road?  Ans. 11.5 ft c.

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TrigonometryWorkPlan_03 - Week3 LECTURE I a i SineFunction...

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