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Triangle upper A upper B upper C has each of the interior angles by its vertices labeled with singular arcs. Side upper A upper B is labeled c, side upper A upper C is labeled b, and side upper B upper C is labeled a.


Given angle B is 94 degrees, use the Law of Sines to find the measure of angle C if b=13 inches and c=6 inches. Round your answer to the nearest degree.

(1 point)
Responses

86 degrees
86 degrees

27 degrees
27 degrees

1 degree
1 degree

7 degrees
7 degrees

1 answer

To find the measure of angle \( C \) using the Law of Sines, we start with the formula:

\[ \frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C} \]

Given:

  • \( b = 13 \) inches
  • \( c = 6 \) inches
  • \( \angle B = 94^\circ \)

We can find \( \sin B \):

\[ \sin B = \sin(94^\circ) \]

Now, we can write the ratio for \( b \) and \( c \):

\[ \frac{b}{\sin B} = \frac{c}{\sin C} \]

Substituting the known values:

\[ \frac{13}{\sin(94^\circ)} = \frac{6}{\sin C} \]

Now isolate \( \sin C \):

\[ \sin C = \frac{6 \cdot \sin(94^\circ)}{13} \]

Calculating \( \sin(94^\circ) \):

\[ \sin(94^\circ) \approx 0.998 \]

Now substituting back in:

\[ \sin C = \frac{6 \cdot 0.998}{13} \approx \frac{5.988}{13} \approx 0.4606 \]

Next, we find \( C \) by taking the inverse sine:

\[ C \approx \sin^{-1}(0.4606) \]

Calculating \( C \):

\[ C \approx 27.4^\circ \]

Rounding to the nearest degree:

\[ C \approx 27^\circ \]

Thus, the measure of angle \( C \) is \( 27 \) degrees.

The response is \( \boxed{27} \) degrees.