Precalculus Examples

 $\begin{matrix} Side & Angle \\ \begin{matrix} b = \\ c = \\ a = \end{matrix} & \begin{matrix} A = & 95 ° \\ B = \\ C = & 21 ° \end{matrix} \end{matrix}$

Step 1

The sum of all the angles in a triangle is $180$ degrees.

$95 ° + 21 ° + B = 180$

Step 2

Solve the equation for $B$ .

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Step 2.1

Add $95 °$ and $21 °$ .

$116 + B = 180$

Step 2.2

Move all terms not containing $B$ to the right side of the equation.

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Step 2.2.1

Subtract $116$ from both sides of the equation.

$B = 180 - 116$

Step 2.2.2

Subtract $116$ from $180$ .

$B = 64$

Step 3

There are not enough parameters given to solve the triangle.

Unknown triangle