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17. If tan 0 =cot(60°+0), find the value of .If sin A =?, find the value of 5 + 4 cot? A.Sal Wohoutonto

Answer»

tanA=cot(60+A)cot(90-A)=cot(60+A)90-A=60+A90-60=A+A30=2A15°=A

15° is the right answer



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