3 years ago

Which proportion could be used to find the length of side b?

Mathematics

2 answers:

Goshia [24]3 years ago

8 0

Answer:

Step-by-step explanation:

Using the Sine Rule in ΔABC

$\frac{a}{sinA}$ = $\frac{b}{sinB}$ = $\frac{c}{sinC}$

∠C = 180° - (82 + 58)° = 180° - 140° = 40°

Completing values in the above formula gives

$\frac{a}{sin58}$ = $\frac{b}{sin82}$ = $\frac{8.4}{sin40}$

We require a pair of ratios which contain b and 3 known quantities, that is

$\frac{b}{sin82}$ = $\frac{8.4}{sin40}$

$\frac{sin40}{8.4}$ = $\frac{sin82}{b}$ → B

Zepler [3.9K]3 years ago

4 0

Answer:

Step-by-step explanation:

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Which proportion could be used to find the length of side b?​

Which proportion could be used to find the length of side b?