How do many calculators evaluate the tangent of an angle? They graph a unit circle to calculate the tangent of an angle.
They use the fact that tangent is sine over cosine to calculate tangent.
The use tables for cotangent of an angle to calculate tangent of an angle.
They include extensive tables to determine the tangent of an angle.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

only 10/60 isn't equivalent

hope this : )

i belive those are the ones that are under 90 degreese.