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padilas [110]
3 years ago
5

Determine b , given that A = 63°, C = 49°, and c = 3. Round answers to the nearest whole number. Do not use a decimal point or e

xtra spaces in the answer or it will be marked incorrect.

Mathematics
2 answers:
Tatiana [17]3 years ago
6 0
Angle B = 68 degrees
Using the Law of Sines
b / sin(B) = c / sin (C)
b = sin (68) * c / sin (49)
b = 0.92718 * 3 / 0.75471
b = <span> <span> <span> 2.78154 </span> </span> </span> / 0.75471
<span> <span> <span> b = 3.6855745916


</span></span></span>
padilas [110]3 years ago
6 0

Answer:

b=4

Step-by-step explanation:

Let us draw a triangle ABC, with A = 63°, C = 49°, and c = 3.

In the triangle ABC,

A +B +C = 180°

63°+B+49°= 180°

B = 180°-63°-49°

B = 68°

Use Sine law to find b

\frac{c}{sin C}=\frac{b}{\sin B}\\\\\frac{3}{\sin49}=\frac{b}{\sin68}\\\\b=\frac{3\sin68}{sin49}\\\\b=3.7

In the nearest whole number b = 4

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