Trigonometry Examples

$x = \arccos (\cos (50))$

Step 1

Simplify $\arccos (\cos (50))$ .

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Step 1.1

Evaluate $\cos (50)$ .

$x = \arccos (0.6427876)$

Step 1.2

Evaluate $\arccos (0.6427876)$ .

$x = 50$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 0.87266462$

Step 3