Witch pair of angles has congruent valuse for the sin x degrees and the cos y degrees. a) 40 degrees; 140 degrees b)40 deg; 80 deg; c)40 deg; 50 deg; d)40 deg; 40 deg;

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

What is the difference between regular convex and concave polygons