Basic geometry question and proof that $dT/d\Theta = 1 + T^2$
2676
Finding $\frac {d(\tan \theta)}{d\theta}$
133756
Geometric interpretation of $\det(A^T) = \det(A)$
103701
Fundamental Theorem of Trigonometry
127034
Let $\rho(x,y)= \frac{d(x,y)}{1+d(x,y)}$, show that $\rho$ is a metric equivalent to $d$
35291
How to show $d(x,y)= \sqrt{d_1(x_1,y_1)^2+d_2(x_2,y_2)^2}$ is a metric?
100901
Proof of centripetal acceleration formula ($a_c = v^2/r$) for non-uniform circular motion
56911
Proving invariance of $ds^2$ from the invariance of the speed of light
26790
Proving the geometric sum formula by induction
10289
Need help in proving that $\frac{\sin\theta - \cos\theta + 1}{\sin\theta + \cos\theta - 1} = \frac 1{\sec\theta - \tan\theta}$
140576
Time reversal symmetry and T^2 = -1
92427
Geodesic equation from the proper time integral
66298
Prove that $\alpha(t)$ lies on a sphere.
33691
Confusion about a particular differential form being exact?
142821
Why?$\int_0^1\int_{u(t)}^{u(t)+w(t)} f(t,v(t)) dv dt = \int_0^1 f(t,u(t)+\theta w(t))w(t) dt; ~~\theta\in[0,1] $
48651
Prove that $\int_0^1t^{p-1}(1-t)^{q-1}\,dt=\frac{\Gamma(p)\Gamma(q)}{\Gamma(p+q)}$ for positive $p$ and $q$
109358
Prove the Curvature Tensor is a Tensor
111838
Prove that a standard torus is diffeomorphic to $ \mathbb S^1\times \mathbb S^1$