# Download Factor a trinomial: 2 cos 2x + cos x 1 = 0 when 0 ≤ x < 2π

Survey

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Two-body Dirac equations wikipedia , lookup

Maxwell's equations wikipedia , lookup

Debye–Hückel equation wikipedia , lookup

Schrödinger equation wikipedia , lookup

Navier–Stokes equations wikipedia , lookup

Euler equations (fluid dynamics) wikipedia , lookup

Equations of motion wikipedia , lookup

Itô diffusion wikipedia , lookup

Derivation of the Navier–Stokes equations wikipedia , lookup

Differential equation wikipedia , lookup

Exact solutions in general relativity wikipedia , lookup

Schwarzschild geodesics wikipedia , lookup

Partial differential equation wikipedia , lookup

Transcript
```PreCalc: Monday, 5‐1
5.5 day 3 Solving Trig Equations
Factor a trinomial: 2 cos 2x + cos x ­ 1 = 0 when 0 ≤ x < 2 π
Think of this equation as _______________ and use "X­box" method.
Solve using square roots:
4 sin 2x ­ 1 = 0 when 0 ≤ x < 2 π
Move all terms to one side of the equation and solve:
tan x sin 2x = 3 tan x when 0 ≤ x < 2 π
```