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[" 14. Deltahasy that : eos "30^(@)" cas...

[" 14. Deltahasy that : eos "30^(@)" cas "52^(@)" m sin "38^(@)" ein "52^(@)=0],[" 16,If sec "4A" .cosec "6A=20^(@)" ,brhore "4A" is an acute angle,find the value af "A" ."]

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