sec ^(-1) [sec ( - 30^(@))] बराबर है -...

`sec ^(-1) [sec ( - 30^(@))]` बराबर है -

A

`150^(@)`

B

`-30^(@)`

C

`30^(@)`

D

`-60^(@)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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