1.

A driver can be see the sunset at an angle of

Answer»

`SIN^(-1) (4//3)`
`sin^(-1) (1//3)`
`sin^(-1) (1//4)`
`sin^(-1) (3//4)`

Solution :`mu_(w) = (4)/(5), c = ?`
`._(w)mu_(a) = (1)/(._(a)mu_(w)) = sin c`
`:. sin c = (1)/((4)/(3)) = (3)/(4)`
`c = sin^(-1)((3)/(4))`.


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