1.

If the angles alpha , beta , gamma of a trianlge satisfy the relation, sin ((alpha+ beta)/(2)) + sin ((alpha - gamma)/( 2)) + sin ((3 alpha )/(2)) = 3/2, then The measure of the smallest angle of the triangle is

Answer»

`30^(@)`
`40^(@)`
`45^(@)`
`50^(@)`

ANSWER :B


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