Mathematics · Trigonometry

If (1 + tanα)(1 + tan 4α) = 2, where α ∈ (0, π16), then α is equal to:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1π60
2π40
3π20✓
4π30

Correct answer

π20

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If (1 + tanα)(1 + tan 4α) = 2, where α ∈ (0, π16), then α is equal to:

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If (1 + tanα)(1 + tan 4α) = 2, where α ∈ (0, π16), then α is equal to:

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