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यदि sec 4 A = "cosec" (A - 20^@), जहाँ 4...

यदि `sec 4 A = "cosec" (A - 20^@)`, जहाँ 4 A एक न्यूनकोण है तो A का मान ज्ञात कीजिए।

लिखित उत्तर

Verified by Experts

The correct Answer is:
`22^@`
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