plz urgent..............
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cos©=30°=√3/2
sec30° = 2/√3
cosec30° =2
=(1-2/√3)/(1+2)
=(√3-2/√3)/3
=-2 /3
sec30° = 2/√3
cosec30° =2
=(1-2/√3)/(1+2)
=(√3-2/√3)/3
=-2 /3
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