what is the difference between $(\cos A)^2$ and $\cos^2 A$
75398
meaning of powers on trig functions
106803
How to see $\cos x \leq \exp(-x^2/2)$ on $x \in [0,\pi/2]$?
97782
Why are the domains for $\ln x^2$ and $2\ln x$ different?
138419
Sigma algebra and algebra difference
147627
Relation between condition numbers $\kappa(A^T A)$ and $\kappa(A)$
48956
Simplify $\arctan (\frac{1}{2}\tan (2A)) + \arctan (\cot (A)) + \arctan (\cot ^{3}(A)) $
5528
Difference between $:=$ and $=$
76163
Math.cos() gives wrong result
132448
Prove that: $\int_0^{n\pi}f(\cos^2(x))\,dx=n\int_0^{\pi}f(\cos^2(x))\,dx?$
63155
Express $1+2\cos a$ as a product
102138
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
80015
$Tr(A^2)=Tr(A^3)=Tr(A^4)$ then find $Tr(A)$
34918
Difference between $R^\infty$ and $R^\omega$
17188
Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer
118586
Confused About Trigonometric Substitution
105774
How is $ \cos (\alpha / \beta) $ expressed in terms of $\cos \alpha $ and $ \cos \beta $?
57967
Difference between $\mathbb C$ and $\mathbb R^2$