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If theta and phi are positive acute angl...

If `theta and phi` are positive acute angles satisfying `sin theta =1/2 and cos phi =1/3, `then the value of `(theta + phi)` lies in the interval-

A

`(pi/3, pi/2]`

B

`(pi/2, 2pi/3]`

C

`(2pi/3, 5pi/6]`

D

`(5pi/6, pi]`

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