text: ## Trigonometry (10th Edition)
  
  $\tan$ 421$^{\circ}$ 30' = 1.84177088
  $\tan$ 421$^{\circ}$ 30' First, convert to a fraction $\tan$ 421$^{\circ}$ $\frac{30}{60}$ Convert the fraction to a decimal $\frac{30}{60}$ = 0.50 Therefore: $\tan$ 421$^{\circ}$ 30' = $\tan$ 421.50$^{\circ}$ $\tan$ 421.50$^{\circ}$ = 1.84177088 $\tan$ 421$^{\circ}$ 30' = 1.84177088
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