How do you square $\sin θ\,$?
91521
Ambiguity of notation: $\sin(x)^2$
281
How one can prove $\prod_{k=1}^{n-1} (\cos\theta-\cos(k\pi/n)) = 2^{1-n}\sin(n\theta)\csc\theta$?
53135
Find $4\cos\theta-3\sin\theta$, given that $4\sin \theta +3\cos \theta = 5$
5080
How can we sum up $\sin$ and $\cos$ series when the angles are in arithmetic progression?
156485
How to evaluate $\int_{0}^{2\pi}e^{\cos \theta}\cos( \sin \theta) d\theta$?
44391
How can I prove $n - 2\sqrt{n} = \Theta(n)$
7492
Is there a formula for $\sin(xy)$
138341
How do you square an ideal?
92898
How to integrate $\sqrt{1-\sin 2x}$?
125171
Help with this trigonometry problem?
35244
Prove $\sin^2\theta + \cos^2\theta = 1$
132859
How does C compute sin() and other math functions?
147886
Proof of the angle sum identity for $\sin$
93372
How to solve CSC = sin-1?
56195
Find the minimum value of $\sin^{2} \theta +\cos^{2} \theta+\sec^{2} \theta+\csc^{2} \theta+\tan^{2} \theta+\cot^{2} \theta$
33100
Trigonomnetric equality involving tg
30127
Integration of sqrt Sin x dx