Trigonometry
Determine the exact value of the following trigonometric expression by sketching.
tan[sin−1(−2029)]\tan\left[\sin^{-1}\left(-\frac{20}{29}\right)\right\rbracktan[sin−1(−2920)]
−2021-\frac{20}{21}−2120
−2120-\frac{21}{20}−2021
−2129-\frac{21}{29}−2921
2021\frac{20}{21}2120