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If alpha=3sin^(-1)(2/3) and beta=2cos^(-...

If `alpha=3sin^(-1)(2/3)` and `beta=2cos^(-1)(1/3)` then which of the following is/are CORRECT?

A

`cos alpha lt 0`

B

`sin beta gt0`

C

`cos beta lt 0`

D

`sin (alpha+beta)lt0`

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