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cos^(-1)((1)/(2))-2sin^(-1)(-(1)/(2)) का...

`cos^(-1)((1)/(2))-2sin^(-1)(-(1)/(2))` का मुख्य मान ज्ञात कीजिए |

लिखित उत्तर

Verified by Experts

The correct Answer is:
`(2pi)/(3)`
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