How do you find ${sin}^{- 1} (1.2)$ $sin^-1(1.2)$ without using a calculator?

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Answer 1 · 2015-06-25T14:51:52

Are you sure about the argument? Can be $\frac{1}{2}$ $1/2$ ?

The fact is that ${sin}^{- 1}$ $sin^-1$ is defined between $+ 1$ $+1$ and $- 1$ $-1$ ...

How do you find sin−1(1.2)sin^-1(1.2) without using a calculator?