How do you use a calculator to find $csc^-1(2pi/9)$ ?

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Answer 1 · 2015-12-02T04:09:33

Find $csc^-1 ((2pi)/9)$

Ans: $44^@25$

(2pi/9) = 2(3.14/9) = 6.28/9 = 0.70
$csc (0.70) = 1/(sin (0.70))$
Use calculator to find --> sin x = 0.70 --> arc $x = 44^@25$

How do you use a calculator to find csc^-1(2pi/9)csc^-1(2pi/9)?