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9h
comment Trigonometric equality to prove
Probably mathworld.wolfram.com/WernerFormulas.html should help
9h
comment Trigonometric AP relation on sides of a triangle
@user3650050, How about this?
9h
answered Trigonometric AP relation on sides of a triangle
10h
comment Using Wilson's Theorem to prove Fermat's Little Theorem
See also : math.stackexchange.com/questions/234745/…
10h
answered How does $\sqrt {\frac{{4 + \sqrt {15} }}{8}} = \frac{{\sqrt {8 + 2\sqrt {15} } }}{4}$
10h
answered Using Wilson's Theorem to prove Fermat's Little Theorem
17h
answered Prove that the expression is Independent of theta
1d
comment Hard Trigonometric Equation
@ReneSchipperus, Do you have a deterministic way to solve such a Transcendental equation (en.wikipedia.org/wiki/Transcendental_equation). How do you establish the uniqueness?
1d
comment Conditional identity based proof
math.stackexchange.com/questions/393786/…
1d
revised Evaluating $\lim_{x \to 2} \frac{e^x - e^2 - (x^2 - 4x + 4)\sin (x - 2)}{\sin [(x - 2)^2] + \sin (x-2)}$
added 329 characters in body
1d
answered Evaluating $\lim_{x \to 2} \frac{e^x - e^2 - (x^2 - 4x + 4)\sin (x - 2)}{\sin [(x - 2)^2] + \sin (x-2)}$
1d
comment Hard Trigonometric Equation
math.stackexchange.com/questions/75825/…
1d
comment A kind of a remainder problem
@DhruvGoel, math.stackexchange.com/questions/12067/…
1d
answered A kind of a remainder problem
1d
comment How to find angle x without calculator?
@ComplexGuy, Consider $$\triangle CAD$$
1d
answered How to find angle x without calculator?
1d
answered Decompose a fraction in a sum of two
1d
answered Integrate a division of polynomials
1d
comment Infinitely many prime numbers 6n-1
math.stackexchange.com/questions/407259/…
1d
comment When is $n!+1$ composite?
en.wikipedia.org/wiki/Factorial_prime , Check for $n=27,77,154$ etc.