\( x=\frac{x+8}{\tan (16.4)}\times \tan (15.9) \)
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To solve for \( x \) in the equation \( x=\frac{x+8}{\tan (16.4)}\times \tan (15.9) \), first, let's simplify the expression. Multiply both sides by \( \tan(16.4) \): \[ x \tan (16.4) = (x + 8) \tan(15.9) \] This expands to: \[ x \tan (16.4) = x \tan (15.9) + 8 \tan(15.9) \] Now, we can isolate \( x \): \[ x \tan (16.4) - x \tan (15.9) = 8 \tan(15.9) \] Factor out \( x \): \[ x (\tan (16.4) - \tan (15.9)) = 8 \tan(15.9) \] Finally, divide both sides by \( (\tan (16.4) - \tan (15.9)) \) to solve for \( x \): \[ x = \frac{8 \tan(15.9)}{\tan(16.4) - \tan(15.9)} \] Make sure to use a calculator to find the values for \( \tan(16.4) \) and \( \tan(15.9) \) and plug them into the equation to find your solution!