How do you evaluate $sin (arcsin (12/3) + Arcsin (4/5))$ ?

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Answer 1 · 2018-07-11T07:21:26

There is something wrong. You cannot have sine of an angle whose absolute value is greater than one. Hence $arcsin(12/3)$ is not possible.

How do you evaluate sin (arcsin (12/3) + Arcsin (4/5))sin (arcsin (12/3) + Arcsin (4/5))?