Which expression can be used to form an identity with 1 over cos squared theta minus 1

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

The height of a box can be found by dividing its volume by the area of its base,bottom.what is the height of a box that has a volume of 26.35 cubic centimeter and a base area of 4 1/4 square centimeter?

Louis wants to give \$15 to kids who need school supplies. he also wants to buy a pair of shoes for \$39. how much money will he have to save for both?