Finding minimum value of a trigonometric expression
120444
Trigonometric Triangle Equality
73538
solving $\cos z + \sin z = i$
60206
Find minimum of $P=\frac{\sqrt{3(2x^2+2x+1)}}{3}+\frac{1}{\sqrt{2x^2+(3-\sqrt{3})x +3}}+\frac{1}{\sqrt{2x^2+(3+\sqrt{3})x +3}}$
13297
Prove the following trigonometric identity without a calculator involved
108245
Solving the complex equation $\sin(z) = \cos(z)$
115248
$x\sin x$ is a solution of $n$th order linear differential equation. Find minimum $n$
135225
How to find the period of the sum of two trigonometric functions
87907
How to find the maximum and minimum value of $\left|(z_1-z_2)^2 + (z_2-z_3)^2 + (z_3-z_1)^2\right|$ (where $|z_1|=|z_2|=|z_3|=1$)?
53536
Maximum value of $f(x) = \cos x \left( \sin x + \sqrt {\sin^2x +\sin^2a}\right)$
154231
Solving trigonometric equations without a calculator or tables
617
Find θ: $β=\arctan\frac{(R+r)·\sin(θ)-r·\sin(θ(1+\frac{R}{r}))}{(R+r)·\cos(θ)-r·\cos(θ(1+\frac{R}{r}))}$
95633
Help with this trigonometry problem
100777
Finding the derivatives of sin(x) and cos(x)
79125
How to find the maximum value for the given $x\cos{\lambda}+y\sin{\lambda}$?
77435
Analytic solution for angle of minimum deviation?
43605
If $\sin(a)\sin(b)\sin(c)+\cos(a)\cos(b)=1$ then find the value of $\sin(c)$
54078
The minimum value of $\frac{(x+\frac{1}{x})^6-(x^6+\frac{1}{x^6})-2}{(x+\frac{1}{x})^3+x^3+\frac{1}{x^3}}$