Look at pic and answer plz

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?