The sides of a triangle are sin alpha, c...

The sides of a triangle are `sin alpha, cos alpha and sqrt(1+ sin alpha cos alpha)` where` 0 lt alpha lt (pi)/(2).`
Then the greatest angle of the triangle is-

A

(a) `60^(@)`

B

(b) `90^(@)`

C

(c) `120^(@)`

D

(d) `150^(@)`

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The correct Answer is:

C

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