Evaluating a general solution to $5\cos \theta -12\sin \theta = 13$ using vectors
58483
Determining the general solution for the trigonometric equation $ 5\cos(x)-12\sin (x) = 13 $
55869
Use the Maclaurin series to prove that $e^{i\theta} = cos(\theta) + isin(\theta)$
125171
Help with this trigonometry problem?
114011
Algebra - Solving for three unknowns.
146308
Solving 2-degree equations in 3 variables.
1210
Write an expression for $(\cos θ + i\sin θ)^4$ using De Moivre’s Theorem.
35244
Prove $\sin^2\theta + \cos^2\theta = 1$
9539
$\alpha$ and $\beta$ are solution of $a \cdot \tan\theta + b \cdot \sec\theta = c$ show $ \tan(\alpha + \beta) = \frac{2ac}{a^2 - c^2}$
93212
Express $\sqrt{3}\sin\theta - \cos\theta$ as: $a\cos (\theta + \alpha) $
73783
How to solve Kepler's equation $M=E-\varepsilon \sin E$ for $E$?
23238
Linear combinations of sine and cosine
18841
Ways to evaluate $\int \sec \theta \, \mathrm d \theta$
31852
An elegant way to solve $\frac {\sqrt3 - 1}{\sin x} + \frac {\sqrt3 + 1}{\cos x} = 4\sqrt2 $
27513
Trigonometric bounds
71988
Evaluate $\int_0^{2\pi} \frac{\sin^2\theta}{5+4\cos\theta}\,\mathrm d\theta$
66872
Exact values of $\cos(2\pi/7)$ and $\sin(2\pi/7)$
119407
Solution of Vector equation