Sine, cosine, and tangent to calculate the height of the buildings in the diagram below.

Through: (-3,-3) parallel to y= 7/3x+3

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota