Is there a way to simplify sines of product angles?
7492
Is there a formula for $\sin(xy)$
116223
Show that the angles satisfy $x+y=z$
44649
Summing a series having a geometric component
143584
Trigonometric ratios for angles greater than $90^\circ$?
145500
Finite Series - reciprocals of sines
128812
How can I get sin, cos, and tan to use degrees instead of radians?
93372
How to solve CSC = sin-1?
51679
Simplifying the product $\prod\limits_{k=2}^n \left(1-\frac1{k^2}\right)$
46886
Is there an algorithm for converting quaternion rotations to Euler angle rotations?
51829
How have the "following trig formulas" been modified to obtain the new trig formulas?
148207
Express $\cos 6\theta $ in terms of $\cos \theta$
40235
How would I differentiate $\sin{x}^{\cos{x}}?$
48956
Simplify $\arctan (\frac{1}{2}\tan (2A)) + \arctan (\cot (A)) + \arctan (\cot ^{3}(A)) $
12841
Ratio of sines given, find ratio of cosines?
104410
Why do we omit the negative sign when finding basic angle when solving trigonometric equations?
138847
Tricky trigonometric sum evaluation
57594
How to simplify $\frac{\sqrt{4+h}-2}{h}$