Which of the following explains why cos 60º = sin 30° using the unit circle?

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

For what values of x is x2 + 2x = 24 true?

Which of the following is the result of expanding the series