Use reference angles to find the exact value of [tex]\tan 405^\circ[/tex].

t an 40 5 o = t an ( 36 0 o + 4 5 o ) = t an 4 5 o = 1

Answered by Anonymous | 2024-06-10

To find tan 40 5 ∘ , we subtract 360 degrees to find that it is co-terminal with 4 5 ∘ . The tangent of 4 5 ∘ is 1, so tan 40 5 ∘ = 1 .
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Answered by Anonymous | 2024-12-26