Mathematics, 25.12.2021 18:20 milkshakegrande101

If sinA=1/7, sinB=1/3.
Prove: cos2A=sin4AB

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If sinA=1/7, sinB=1/3.
Prove: cos2A=sin4AB...

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If sinA=1/7, sinB=1/3.Prove: cos2A=sin4AB

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Another question on Mathematics

If sinA=1/7, sinB=1/3.
Prove: cos2A=sin4AB