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10 When 0° < A <909, solve the following equations:() Sin 3A = cos 2Aし-tan 5A = cot A. |
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Answer» tan5A= cot2Atan5A= tan(pi/2-2A)general solution is5A=npi+(pi/2-2A)7A=(2n+1)pi/2 answer is 15° |
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