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If tan a=1/7 and tan b=1/3, prove that cos 2a =sin 4b

If tan a=1/7 and tan b=1/3, prove that cos 2a =sin 4b
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If tan a=1/7 and tan b=1/3, prove that
cos 2a =sin 4b

User Jhony Fung
by
7.9k points

1 Answer

3 votes
Solve is in the pic.

With Geometry..



GoodLuck:)
If tan a=1/7 and tan b=1/3, prove that cos 2a =sin 4b-example-1
User Oscar Castiblanco
by
8.1k points
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