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Solve: tan(theta)+tan2(theta)+root3tan(theta)tan2(theta) = root(3) [ 0 degree <= theta <=360 degree]
Sunday, January 7, 2018
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Soln: Use formula: cos2A = 2cos^2(A) - 1 cos2A+1= 2cos^2(A) (1+cos2A)/2 = cos^2(A) i.e. cos^2(A) = (1+cos2A)/2
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