What is the general solution for cos(x)=-sqrt(3)sin(x) ?

The general solution for cos(x)=-sqrt(3)sin(x) is x=(5pi)/6+pin

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

cos(x)=-sqrt(3)sin(x)

cos (x) = - 3 sin (x)

x = \frac{5 π}{6} + πn

Degrees

x = 15 0^{\circ} + 18 0^{\circ} n

Solution steps

cos (x) = - 3 sin (x)

Rewrite using trig identities

cos (x) = - 3 sin (x)

Divide both sides by

cos (x), cos (x) \neq = 0

\frac{cos ( x )}{cos ( x )} = \frac{- 3 sin ( x )}{cos ( x )}

Simplify

1 = - \frac{3 sin ( x )}{cos ( x )}

Use the basic trigonometric identity:

\frac{sin ( x )}{cos ( x )} = tan (x)

1 = - 3 tan (x)

Switch sides

- 3 tan (x) = 1

- 3 tan (x) = 1

Divide both sides by

- 3

- 3 tan (x) = 1

Divide both sides by

- 3

\frac{- 3 tan ( x )}{- 3} = \frac{1}{- 3}

Simplify

\frac{- 3 tan ( x )}{- 3} = \frac{1}{- 3}

Simplify

\frac{- 3 tan ( x )}{- 3} : tan (x)

\frac{- 3 tan ( x )}{- 3}

Apply the fraction rule:

\frac{- a}{- b} = \frac{a}{b}

= \frac{3 tan ( x )}{3}

Cancel the common factor:

3

= tan (x)

Simplify

\frac{1}{- 3} : - \frac{3}{3}

\frac{1}{- 3}

Apply the fraction rule:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{1}{3}

Rationalize

- \frac{1}{3} : - \frac{3}{3}

- \frac{1}{3}

Multiply by the conjugate

\frac{3}{3}

= - \frac{1 \cdot 3}{3 3}

1 \cdot 3 = 3

33 = 3

33

Apply radical rule:

a a = a

33 = 3

= 3

= - \frac{3}{3}

= - \frac{3}{3}

tan (x) = - \frac{3}{3}

tan (x) = - \frac{3}{3}

tan (x) = - \frac{3}{3}

General solutions for

tan (x) = - \frac{3}{3}

tan (x)

periodicity table with

πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

x = \frac{5 π}{6} + πn

x = \frac{5 π}{6} + πn

sin (α) = \frac{3}{5}, 0 < a < \frac{π}{2}

- \frac{15 ( 0.5 cos ( x ) - sin ( x ) )}{( 0.5 sin ( x ) + cos ( x ) ) ^{2}} = 0

x, 0.33 = sin (209.42 x)

- 2 + tan (θ) = - 1

sin^{2} (x) + cos^{2} (\frac{2}{5}) = 1

What is the general solution for cos(x)=-sqrt(3)sin(x) ?
The general solution for cos(x)=-sqrt(3)sin(x) is x=(5pi)/6+pin