(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

how do I solve this

arcsin(4/5)

note that I am not looking for about 53 degrees

I believe I'm suppose to solve euler's formula for x

i.e.

sin (x) = (e^(ix) - e^(-ix))/(2i)

where x is in radians

hence I would do something like this

sin (x) = (e^(ix) - e^(-ix))/(2i) = 4/5

(e^(ix) - e^(-ix))/(2i) = 4/5

solve the equation above for x

this is were I need help if somebody could just show me quickly how to do this that would be great!!!

If I remeber correctly I need to use cis(x) or something right?

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Calculus please help me solve this simple problem (I forgot how to): arcsin(4/5) = ?

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