Question

I somehow deduced that $\tan x=\iota$ for any real value of $x$ by equating the value of $\tan(\frac{\pi}{2}+x)$ obtained using two identities.

score 106 · Answer 1 · 2020-06-19 17:07:07

I somehow deduced that $\tan x=\iota$ for any real value of $x$ by equating the value of $\tan(\frac{\pi}{2}+x)$ obtained using two identities.

score 1.1k · Answer 2 · 2026-03-25 15:58:58

1.1k

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score 64 · Answer 5 · 2020-07-15 19:13:15

64

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score 330 · Answer 12 · 2016-07-28 21:32:26

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score 550 · Answer 14 · 2016-08-15 00:13:11

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290

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List Question

I somehow deduced that $\tan x=\iota$ for any real value of $x$ by equating the value of $\tan(\frac{\pi}{2}+x)$ obtained using two identities.

About Cohen's proof for Goldbach's conjecture

Nelson's proof of the inconsistency of arithmetic

Proof that any number is equal to $1$

A fallacious proof of the existece of non-Borel sets.

Confused about positive semidefinite property of matrices

Convergence of $\sqrt{1-\sqrt{{1}-\sqrt{{1}-\sqrt{{1-\sqrt{{1}}}...}}}}$

Mathematical Fallacy - The $17$ camels Problem.

Little question about differentiation

Convergence of sequence $a_0 := b$ and $a_{n+1} = 2^{a_n}$ in $\hat{\mathbb{Z}}$.

A paradox in differential calculus

Geometric False Result Based on SSA Congruence Criterion for Triangles

Composition of Absolutely Continuous Functions

Inductive proof that every person supports the same team

Where Is The Problem In Proving $1=2$ Through Continued Fractions

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