ΔXYZ is a right triangle with right angle X, sin Y = m, and cos Y = k.
What is cos Z − sin Z ?

k - m

2m

k + m

m - k

On a coordinate grid, point p is at (4, 3) and point r is at (−2, −5). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s? q(−4, 3), s(2, −5) q(4, −3), s(−2, 5) q(−4, −3), s(2, 5) q(−4, 3), s(−2, 5) ; -; i can't figure it out, if someone can me with the answer, that would be nice

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?