| 103898 | Sum and Difference Identities · Exercise 21 | Medium | |
| 103912 | Sum and Difference Identities · Exercise 35 | Medium | |
| 103916 | Sum and Difference Identities · Exercise 39 | Medium | |
| 103918 | Sum and Difference Identities · Exercise 41 | Medium | |
| 103920 | Sum and Difference Identities · Exercise 43 | Medium | |
| 103951 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 5 | Medium | |
| 103955 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 9 | Medium | |
| 103967 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 21 | Medium | |
| 103969 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 23 | Medium | |
| 103973 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 27 | Medium | |
| 103981 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 35 | Medium | |
| 103983 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 37 | Medium | |
| 103987 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 41 | Medium | |
| 103989 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 43 | Medium | |
| 103991 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 45 | Medium | |
| 103995 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 49 | Medium | |
| 104026 | Sum-to-Product and Product-to-Sum Formulas · Exercise 5 | Medium | |
| 104030 | Sum-to-Product and Product-to-Sum Formulas · Exercise 9 | Medium | |
| 104045 | Sum-to-Product and Product-to-Sum Formulas · Exercise 25 | Medium | |
| 104053 | Sum-to-Product and Product-to-Sum Formulas · Exercise 33 | Medium | |
| 104055 | Sum-to-Product and Product-to-Sum Formulas · Exercise 35 | Medium | |
| 104057 | Sum-to-Product and Product-to-Sum Formulas · Exercise 37 | Medium | |
| 104059 | Sum-to-Product and Product-to-Sum Formulas · Exercise 39 | Medium | |
| 104063 | Sum-to-Product and Product-to-Sum Formulas · Exercise 43 | Medium | |
| 107361 | Sum and Difference Identities · Exercise 43 | Medium | |
| 107371 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 9 | Medium | |
| 107378 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 35 | Medium | |
| 107380 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 37 | Medium | |
| 107392 | Sum-to-Product and Product-to-Sum Formulas · Exercise 39 | Medium | |
| 107394 | Sum-to-Product and Product-to-Sum Formulas · Exercise 41 | Medium | |
| 107396 | Sum-to-Product and Product-to-Sum Formulas · Exercise 43 | Medium | |
| 103882 | Sum and Difference Identities · Exercise 5 | Medium | |
| 103884 | Sum and Difference Identities · Exercise 7 | Medium | |
| 103886 | Sum and Difference Identities · Exercise 9 | Medium | |
| 103888 | Sum and Difference Identities · Exercise 11 | Medium | |
| 103890 | Sum and Difference Identities · Exercise 13 | Medium | |
| 103892 | Sum and Difference Identities · Exercise 15 | Medium | |
| 103894 | Sum and Difference Identities · Exercise 17 | Medium | |
| 103896 | Sum and Difference Identities · Exercise 19 | Medium | |
| 103900 | Sum and Difference Identities · Exercise 23 | Medium | |
| 103910 | Sum and Difference Identities · Exercise 33 | Medium | |
| 103914 | Sum and Difference Identities · Exercise 37 | Medium | |
| 103922 | Sum and Difference Identities · Exercise 45 | Medium | |
| 103953 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 7 | Medium | |
| 103957 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 11 | Medium | |
| 103959 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 13 | Medium | |
| 103961 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 15 | Medium | |
| 103963 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 17 | Medium | |
| 103965 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 19 | Medium | |
| 103971 | Double-Angle, Half-Angle, and Reduction Formulas · Exercise 25 | Medium | |