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frosja888 [35]
3 years ago
6

What is the error in this problem

Mathematics
1 answer:
dlinn [17]3 years ago
4 0

Answer:

10). m∠x = 47°

11). x = 30.96

Step-by-step explanation:

10). By applying Sine rule in the given triangle DEF,

   \frac{\text{SinF}}{\text{DE}}=\frac{\text{SinD}}{\text{EF}}

   \frac{\text{Sinx}}{7}=\frac{\text{Sin110}}{9}

   Sin(x) = \frac{7\times (\text{Sin110})}{9}

   Sin(x) = 0.7309

   m∠x = \text{Sin}^{-1}(0.7309)

   m∠x = 46.96°

   m∠x ≈ 47°

11). By applying Sine rule in ΔRST,

   \frac{\text{SinR}}{\text{ST}}=\frac{\text{SinT}}{\text{RS}}

   \frac{\text{Sin120}}{35}=\frac{\text{Sin50}}{x}

   x = \frac{35\times (\text{Sin50})}{\text{Sin120}}

   x = 30.96   

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