Help with Sine/Cosine/Tangent

Given right triangle xyz, which correctly describes the locations of the sides in relation to

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.