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Prealgebra
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Precalculus
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Intermediate Algebra
| Status | Title | Difficulty |
| 1861. Determinant Transformation | Level 1 | |
| 1862. Trigonometric Sum Simplification 1 | Level 3 | |
| 1863. Matrix Square Solution | Level 2 | |
| 1864. Complex Number Power | Level 3 | |
| 1865. Arccos of Negative Fraction | Level 1 | |
| 1866. Sine Degree Equivalence | Level 1 | |
| 1867. Polynomial With Cosine Root | Level 5 | |
| 1868. Vector Rotation and Reflection | Level 4 | |
| 1869. Trigonometric Equation Solutions 4 | Level 3 | |
| 1870. Trapezoid Sin2x Calculation | Level 5 | |
| 1871. Cosine of Pi | Level 1 | |
| 1872. Trigonometric Ratio Equation | Level 5 | |
| 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 |