Tumwater School District
8-3 Inverse Trig FunctionsThe inverse trig functions will calculate ____________________ within right triangles.Ex 1Use your calculator to find each angle measure to the nearest degree.cos-1(0.87)sin-1(0.85)tan-1(0.71)Ex 2Find all of the unknown measures. Round lengths to the nearest hundredth and angle measures to the nearest degree. Ex 3 A highway sign warns that a section of road ahead has a 7% grade. To the nearest degree, what angle does the road make with a horizontal line? Ex 4 A wheelchair ramp has a rise from the ground of 2 foot. The ramp has a length of 10 feet. To the nearest degree, find the angle the ramp makes with the sidewalk.Ex 5 A skateboard ramp has a slope of 35 . What is the angle the ramp makes with the ground? ................
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