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Feb
16
comment If $p$ is a prime and both roots of $x^{2} +px−444p=0$ are integers what is $p$
@user2612743, for the 1st Question, put $q=pr$ $$\implies (rp)^2=p^2+1776p\iff p^2(r^2-1)=1776p$$$
Feb
16
revised How can this trig equation be simplified?
edited tags
Feb
16
answered How can this trig equation be simplified?
Feb
16
answered If $p$ is a prime and both roots of $x^{2} +px−444p=0$ are integers what is $p$
Feb
15
answered Is this trig step correct?
Feb
15
comment nonlinear diophantine equation $x^2+y^2=z^2$
en.wikipedia.org/wiki/Pythagorean_triple#Generating_a_triple
Feb
15
comment Is this trig step correct?
I think principal value should find a place in the answer
Feb
15
answered If $a+b+c = 7\;\;,a^2+b^2+c^2 = 23$, then $a^3+b^3+c^3=$
Feb
15
comment trigonometric equation for tan^(-1)
Do you mean, OP will validate each value against the given relation?
Feb
15
comment trigonometric equation for tan^(-1)
what if $x=-3$?
Feb
15
answered trigonometric equation for tan^(-1)
Feb
15
revised Simple Trigonometry and algebra
added 25 characters in body
Feb
15
comment Simple Trigonometry and algebra
@Sudhanshu, $$1=\sec^2\theta-\tan^2\theta=(\sec\theta-\tan\theta)(\sec\theta+\tan\theta)$$
Feb
15
answered Simple trigonometric identity proof
Feb
15
comment Simple Trigonometry and algebra
@GTonyJacobs, thanks for your observation on the typo
Feb
15
revised Simple Trigonometry and algebra
deleted 2 characters in body
Feb
15
comment Simple Trigonometry and algebra
In fact, $$\tan^2\theta= \sec^2\theta-1$$ not the one in the answer
Feb
15
revised Simple Trigonometry and algebra
added 283 characters in body
Feb
15
answered Simple Trigonometry and algebra
Feb
15
comment Don't know how to continue modulo reduction
Related : math.stackexchange.com/questions/657131/…