Solve tan6°tan42° tan66°tan78°=1

+1 vote
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asked Jul 28, 2017 in Mathematics by Babulal yadav (20 points) 1
Solve tan6° tan42°tan66° tan78°=1

1 Answer

+1 vote
answered Jul 28, 2017 by Rohit Singh (61,782 points) 35 134 358

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