Simplify sin^2(x)cot^2(x)-1

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor