The triangle below is isosceles Calculate the sine, cosine, and tangent of angle X

HELPPP

Is the number 128.439 a rational number

What is the value of the discrimination for the quadratic equation 0=×2+2+×2

In the picture below, line pq is parallel to line rs, and the lines are cut by a transversal, line tu. the transversal is not perpendicular to the parallel lines. note: figure is not drawn to scale. which of the following are congruent angles?