| Students will be able to use reciprocals, quotients, Pythagorean identities, cofunctions, and composite-arguments to prove trig identities. |
| They drew up multiplication tables and tables of reciprocals, squares, cubes and exponentials, and used them to calculate compound interest and mortgage repayments. |
| Other ordinarily complex procedures, such as calculating square-roots and reciprocals, will be quicker too. |
| These tables also assisted in division, for the values that head them were all reciprocals of regular numbers. |
| We still have their reciprocal tables going up to the reciprocals of numbers up to several billion. |
| Those two pairs of mathematical inverses yield scores that are reciprocals of each other. |
