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यदि समीकरण x^(3) + ax^(2) + bx + 216=0 ...

यदि समीकरण `x^(3) + ax^(2) + bx + 216=0` के तीन वास्तविक मूल गुणोत्तर श्रेणी में है, तो `tan^(-1)(tan (b/a))` का मान है:

A

`2pi-5`

B

`2pi-6`

C

`5-2pi`

D

`6-2pi`

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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