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alpha , beta and gamma are the angles g...

`alpha , beta ` and `gamma` are the angles gives by `alpha = 2 tan^-1(sqrt2 -1), beta = 3 sin^-1 (1/sqrt2) + sin^-1(-1/2)` and `gamma = cos^-1(1/3)`, then

A

`alpha gt beta`

B

`beta gt gamma`

C

`gamma gt alpha`

D

none of these

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The correct Answer is:
B, C
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