- $$\sin\left(\cos^{-1}\frac{2}{\sqrt5}+\sin^{-1}\frac{1}{\sqrt{10}}\right)=?$$
- $$\tan\left[\cos^{-1}\left(\frac{4}{5}\right)+\sin^{-1}\left(-\frac{3}{5}\right)\right]=?$$
- $$\cos\left[\cos^{-1}\left(\frac{4}{5}\right)+\cos^{-1}\left(-\frac{5}{13}\right)\right]=?$$
- $$\sin\left[\tan^{-1}5+\csc(-3)\right]=?$$
- $$\sin\left[2\tan^{-1}\left(-\frac{3}{4}\right)\right]=?$$
No comments:
Post a Comment