Reputation
125,024
Next tag badge:
990/1000 score
400/200 answers
Badges
10 96 176
Newest
 Nice Answer
Impact
~1.1m people reached

Apr
9
answered Summation of $\frac {n^a}{n!}$
Apr
9
revised What is $\tan \alpha$ if $\sin \alpha + \cos \alpha = \frac{\sqrt{3}-1}{2}$ and $\alpha \in (90^\circ,135^\circ)$
added 306 characters in body
Apr
9
answered What is $\tan \alpha$ if $\sin \alpha + \cos \alpha = \frac{\sqrt{3}-1}{2}$ and $\alpha \in (90^\circ,135^\circ)$
Apr
9
comment Find point of passing of two racers.
@N.F.Taussig, Agreed and that is again the starting point
Apr
9
comment Find point of passing of two racers.
Now at $k=1,$ the time $=\dfrac{2t}5$ whereby the winner will traverse $\dfrac25\cdot3000$ meter $\equiv0\pmod{300}$ which is the starting point and check for $k=2$
Apr
9
answered Find point of passing of two racers.
Apr
9
comment How can I calculate $d$ from this equation?
@lary, As $\pmod{55}\iff\pmod5$ and $\pmod{11}$
Apr
9
answered How can I calculate $d$ from this equation?
Apr
9
comment How can we use an identity to solve the equation $1-\tan^2 \theta = \frac{2}{3}$?
@tapadianewlon, See math.stackexchange.com/questions/1217025/…
Apr
8
answered How do I prove that $\arccos(x) + \arccos(-x)=\pi$ when $x \in [-1,1]$?
Apr
8
answered Summation To Infinity Question
Apr
8
answered Finding roots of complex polynomial with conjugates
Apr
8
comment $\sin(2\pi/7) + \sin(4\pi/7) + \sin(8\pi/7) = (root7)/2$
For the product see, math.stackexchange.com/questions/8385/…
Apr
8
comment Prove that the greatest common factor of $m+n$ and $m^2+n^2$ is 1 or 2 if $m$ and $n$ are relatively prime.
@encuka, $(m,n)=1\implies p|2\implies p=1,2$
Apr
8
answered Prove that the greatest common factor of $m+n$ and $m^2+n^2$ is 1 or 2 if $m$ and $n$ are relatively prime.
Apr
8
revised Find the last three digits of $17^{256}$
added 249 characters in body
Apr
8
answered Find the last three digits of $17^{256}$
Apr
8
answered triangle trigonometry
Apr
8
revised Sum of coefficients in an multinomial expression.
added 30 characters in body
Apr
8
answered Sum of coefficients in an multinomial expression.