By the definition of inverse functions, we will get:
[tex]arcsin(-1) = -pi/2[/tex]
The function arcsin(x) is the inverse of the sine function, such that, if:
[tex]sin(x) = y\\\\arcsin(y) = x[/tex]
Now, we know that:
[tex]sin( -pi/2) = -1[/tex]
Where pi = 3.14
Then, using the above rule:
[tex]arcsin(-1) = -pi/2[/tex]
If you want to learn more about inverse functions:
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