Is it possible to calculate $ \sin(\alpha) $ (and other trigonometric functions) as a rational number?
141273
When is $\sin(x)$ rational?
9966
Range of a Rational Function
79419
Is $\sin \infty$ an indeterminate form?
33791
Is it generally true that $\arcsin \theta + \arccos \theta = \frac{\pi}{2}$?
131310
Evaluating $\dfrac{1}{\sin(2x)} + \dfrac{1}{\sin(4x)} + \dfrac{1}{\sin(8x)} + \dfrac{1}{\sin(16x)}$
75487
How to express trigonometric equation in terms of of given trigonometric function?
97213
Why does $\sin(0)$ exist?
29064
Can the real and imaginary parts of $\dfrac{\sin z}z$ be simplified?
12196
Calculate Laurent series for $1/ \sin(z)$
65975
Calculating $\lim_{n\to\infty}\sqrt{n}\sin(\sin...(\sin(x)..)$
6634
Evaluate trigonometric function
107067
Finding the argument of $z=1-\cos(2\theta)-i\sin(2\theta)$
125812
Is sin(x) necessarily irrational where x is rational?
147410
ArcTan(2) a rational multiple of $\pi$?
138847
Tricky trigonometric sum evaluation
61119
Evaluate $\prod_{i=1}^{89} \sin (i)$
5947
Limit of a trigonometric rational expression