Trigonometry Examples

$\cos (x) = \frac{81 - 178}{- 154}$

Step 1

Simplify $\frac{81 - 178}{- 154}$ .

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Step 1.1

Subtract $178$ from $81$ .

$\cos (x) = \frac{- 97}{- 154}$

Step 1.2

Dividing two negative values results in a positive value.

$\cos (x) = \frac{97}{154}$

Step 2

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

$x \approx 0.88941033 + 2 π n, 5.39377497 + 2 π n$ , for any integer $n$

Step 3