1.

Is the adjoining figure, the value of theta is

Answer»

`30^(@)`
`45^(@)`
`60^(@)`
`75^(@)`

Solution :The given FIGURE is a right-angled triangle of which of length of PERPENDICULAR is 5 metres and the length of base is `5sqrt(3)` METERS.
`therefore"" tan theta =(5"metres")/(5sqrt(3)"metres")` [by DEFINITION ]
or, `tan theta =(1)/(sqrt(3)) = tan30^(@) ""rArr "" theta =30^(@)`
Hence (a) is correct.


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