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Luba_88 [7]
3 years ago
11

BC= Round to the nearest hundred

Mathematics
2 answers:
katovenus [111]3 years ago
6 0

Answer:

a = 2.28

Step-by-step explanation:

BC = a

\frac{a}{ \sin(A) }  =  \frac{c}{ \sin(C) }  \\  \frac{a}{ \sin(50) }  =  \frac{3}{ \sin(90) }  \\  \frac{a}{0.76}  =  \frac{3}{1}  \\ a  \times 1= 3 \times 0.76 \\ a = 2.28

Vera_Pavlovna [14]3 years ago
3 0

Answer:

2.3 units

Step-by-step explanation:

The unknown side is opposite the given angle 50 degrees, and the length of the hypotenuse is 3 units.

Since sin Ф = opp / hyp, we have here sin 50° = x/3, or x = 3 sin 50°.

Using a calculator, we find that the sine of 50° is 0.776.

Therefore, x = 3(0.766) = 2.298 units, or approximately 2.3 units

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