Writing a trigonometric expression in terms of another
75487
How to express trigonometric equation in terms of of given trigonometric function?
24656
Proving that $\frac{\csc\theta}{\cot\theta}-\frac{\cot\theta}{\csc\theta}=\tan\theta\sin\theta$
103310
Evaluation of the following expression
13297
Prove the following trigonometric identity without a calculator involved
148624
Replacing Tan[x] with Sin[x]/Cos[x]
82027
How to derive compositions of trigonometric and inverse trigonometric functions?
7296
Prove $(1-\cos x)/\sin x = \tan x/2$
131680
Writing projection in terms of projection matrix
81102
Cosine of the sum of two solutions of trigonometric equation $a\cos \theta + b\sin \theta = c$
33100
Trigonomnetric equality involving tg
482
Express $1 + \frac {1}{2} \binom{n}{1} + \frac {1}{3} \binom{n}{2} + \dotsb + \frac{1}{n + 1}\binom{n}{n}$ in a simplifed form
40235
How would I differentiate $\sin{x}^{\cos{x}}?$
73538
solving $\cos z + \sin z = i$
117785
Express solutions of equation $ \tan x= x $ in closed form
114162
Draw a Line Between Two Points described by Trigonometric Calculations
5080
How can we sum up $\sin$ and $\cos$ series when the angles are in arithmetic progression?
67988
Trigonometric curiosity