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37 votes
37 votes
If Ф ∈ (0, pi/2) and tan(pi cosФ) = cot(pi sinФ), then cos(Ф- pi/4) is equal to?\

User Unheilig
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1 Answer

17 votes
17 votes

Answer:

please see the answer in the picture.

If Ф ∈ (0, pi/2) and tan(pi cosФ) = cot(pi sinФ), then cos(Ф- pi/4) is equal to?\-example-1
User BishalG
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