(tan62/cot28)/1/1.732(tan20*tan60*tan70)
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(tan 62/cot 28)/1/1.732(tan20*tan60*tan 70)=(1/1)/1/root3(1*root3)
=1/3
=1/3
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(tan 62 / cot 28) /1/ 1.732( tan 20*tan 60 * tan 70) = [tan 62 / tan(90-28)] /1/root3 [tan20*tan60*cot(90-70)] = (tan 62/ tan 62 )/1/root3(tan 20 *tan 60* cot 20) = (1/1)/root 3(tan 60)= 1/root 3* root 3 = 1/3
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