How can you use trigonometric ratios to calculate the direction α of a general vector, v= similar to the diagram??

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y

Point m is located at (-4, -6). what is located 4 units from point m? ( its on a coordinate plane by the way. )