Question

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

Answer 1

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

Ans: `44^@25`

Explanation:

(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`