Trigonometry Examples

$y = \cos (x) - 3$

Step 1

Rewrite the equation as $\cos (x) - 3 = y$ .

$\cos (x) - 3 = y$

Step 2

Add $3$ to both sides of the equation.

$\cos (x) = y + 3$

Step 3

Take the inverse cosine of both sides of the equation to extract $x$ from inside the cosine.

$x = \arccos (y + 3)$