PLEASE HELP NOW 50 POINTS! :) What relationship do the ratios of sin x° and cos y° share?

The ratios are both identical. (12 over 13 and 12 over 13)
The ratios are opposites. (negative 12 over 13 and 12 over 13)
The ratios are reciprocals. (12 over 13 and 13 over 12)
The ratios are both negative. (negative 12 over 13 and negative 13 over 12)

Igure 1 and figure 2 are two congruent parallelograms drawn on a coordinate grid as shown below: 4 quadrant coordinate grid showing two parallelograms. figure 1 has vertices at negative 5, 2 and negative 3, 4 and negative 4, 7 and negative 6, 5. figure 2 has vertices at 5, negative 2 and 7, negative 4 and 6, negative 7 and 4, negative 5. which two transformations can map figure 1 onto figure 2? reflection across the y-axis, followed by reflection across x-axis reflection across the x-axis, followed by reflection across y-axis reflection across the x-axis, followed by translation 10 units right reflection across the y-axis, followed by translation 5 units down

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?