Kevin was asked to determine the length of side xz. his work is shown. cos(34°) = (xz)cos(34°) = 18 xz =21.7 which error did kevin make? he has the side lengths in the wrong place in the cosine ratio. he multiplied both sides by the length of xz instead of dividing by xz. he should have used the sine ratio. he should have used the tangent ratio.

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?