Practice using Inverse Trig Ratios
 Have a calculator handy when you solve the problems. Practice Solving Right Triangles     using Trig and Inverse Trig You have learned that trig ratios like sine, cosine, and tangent can be used to solve for missing sidesof a right triangle, when one acute angle is given, along with one side length.In this activity you will use inverse trig ratios to solvefor the missing acute angle measure(s) of a righttriangle, when two side lengths are known or given.The notation sin-1 is pronounced "inverse sine" andthere are function buttons on your calculator for inverse trig ratios. Match each term with its correct ratio. tangentcosinesineoppositeadjacent? opposite  hypotenuse?  adjacent  hypotenuse? hypotenuse?If the reference angle is "y", drag the appropriate terms next to the two side lengths.10y8opposite? hypotenuseWhich inverse trig function would you use to solve for y?10y8oppositesin-1cos-1tan-1 Which inverse trig function would you use to solve for x?6x8sin-1cos-1tan-1 Which inverse trig function would you use to solve for x?10x8sin-1cos-1tan-1 Find x, to the nearest whole number of degrees.31 cmx28 cmx = cos x =x ≈-1degrees 35 mmFind x, to the nearest whole number of degrees.x24 mmx = x ≈sin x =-1degrees Find x, to the nearest whole number of degrees.x29 cm35 cmtan x =x = x ≈-13529degrees Find x, to the nearest whole number of degrees.14 cm7 cmxx =            x =-1(      )degrees 6 mFind x, to the nearest whole number of degrees.6 mxx = x =-1(    )degrees
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