Freeflows
All Problems
Prealgebra
Number
Theory
Counting and Probability
Precalculus
Geometry
Algebra
Intermediate Algebra
| Status | Title | Difficulty |
| 1873. Logarithmic Matrix Determinant | Level 2 | |
| 1874. Orthogonal Vectors Cosine | Level 5 | |
| 1875. Parametric Line Equation | Level 2 | |
| 1876. Trigonometric Equality Solutions 1 | Level 3 | |
| 1877. Trigonometric Solution Range | Level 4 | |
| 1878. Line Intersection Coordinates | Level 3 | |
| 1879. Orthogonal Projection Line | Level 3 | |
| 1880. Tangent of 15 Degrees | Level 2 | |
| 1881. Spherical to Rectangular Conversion | Level 3 | |
| 1882. Cosine Equation Solution | Level 2 | |
| 1883. Vectors Angle Cosine 1 | Level 5 | |
| 1884. Trigonometric Sum Simplification 2 | Level 3 | |
| 1885. Tetrahedron Volume Calculation | Level 4 | |
| 1886. Tangent Sum and Product | Level 3 | |
| 1887. Cosine Difference Calculation | Level 2 | |
| 1888. Vectors Angle Measurement | Level 2 | |
| 1889. Matrix Norm Difference | Level 5 | |
| 1890. Parabola Equation Determination 1 | Level 4 | |
| 1891. Trigonometric Product Equality | Level 4 | |
| 1892. Eigenvalue Vector Equation | Level 5 |