Solving equations involving both algebra, trigonometry (and possible use of inequalities)
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}$
139474
Solving system of Congruences with Two Variables (x and y)
89003
Finding a trigonometric polynomial
44296
Solving a cubic polynomial equation.
5642
Geometry with Trigonometry
110297
Problem related to quadratic equations
61022
Diophantine Equations : Solving $a^2+ b^2=2c^2$
147113
How to solve $2 \tan x / (1 - (\tan x)^2) = (\sin 2x)^2$?
98387
How to solve polynomial equations in a field and/or in a ring?
48657
Solving factorial equations
10508
Algebra: What allows us to do the same thing to both sides of an equation?
131941
Solve quadratic congruences.
145559
Trigonometry problem on product of trig functions.
138847
Tricky trigonometric sum evaluation
26689
A.P. terms in a Quadratic equation.
77810
Solving Trigonometric Derivatives
146308
Solving 2-degree equations in 3 variables.