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Calculators :: Trigonometry Calculators :: Equations Solver

This calculator can solve basic trigonometric equations such as: $\color{blue}{ \sin(x) = \frac{1}{2} }$ or $ \color{blue}{ \sqrt{2} \cos\left(-\frac{3x}{4}\right) - 1 = 0 } $.

The calculator will find exact or approximate solutions on custom range. Solution can be expressed either in radians or degrees.

Trigonometric Equation Solver

Replace radical sign with letter r. Example: to input $\frac{\sqrt{3}}{2} $ type r3/2. Click "generate example" button for more examples.

0 1 2 3 4 5 6 7 8 9 - / . del

( $ \cdot $ x ) =

exact solutions (default) an approximate solutions
radians (default) degrees
Find all solutions (default) ≤ x ≤

Examples on how to use this calculator

Example 1:

Solve

$$ \sin(2x)=\frac{\sqrt{3}}{2} ~~ \text{for} ~~ 0 \leq x \leq 360^\circ $$

Express the results in radians.

Solution

Example 2:

Find all solutions of the equation

$$ \cos \left( \frac{3x}{2} \right) = -\frac{\sqrt{2}}{2}$$

Express the results in degrees.

Solution

Example 3:

Find exact solutions of the equation

$$ \tan \left( -\frac{4x}{3} \right) = 0.4$$

Express the results in radians.

Solution

Example 4:

Solve

$$ 2\sin \left( x \right) + \sqrt{2}= 0 ~~ \text{for} ~~ -180^\circ \leq x \leq 180^\circ $$

Express the results in degrees.

Solution

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