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15 votes
Label ABC with the following information.
m/A = 21°
AC = 13
Find BC.

Label ABC with the following information. m/A = 21° AC = 13 Find BC.-example-1
User Aashreys
by
8.6k points

1 Answer

6 votes

Answer:

BC = 4.7

Explanation:

From the question given above, the following data were:

Angle A = 21 °

Hypothenus = AC = 13

Opposite = BC =?

The length of BC can be obtained by using sine ratio as illustrated below:

Sine A = Opposite /Hypothenus

Sine 21 = BC / 13

0.3584 = BC / 13

Cross multiply

BC = 0.3584 × 13

BC = 4.7

Thus, the length of BC is 4.7

User Adrianbanks
by
8.5k points

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