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3 years ago

1. Solve triangle ABC if A = 42.3º, b = 12.9 meters, and c = 15.4 meters.

Mathematics

1 answer:

kumpel [21]3 years ago

6 0

Answer:

a = 10.36m

B = 47.7º

C = 90º

Step-by-step explanation:

we know the angle of A so we do the sin of A; Spoiler: its 0.67

0.67 = a / 15.4

0.67 * 15.4 = a

a = 10.36

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B = 90 - 42.3 = 47.7º

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$\left \bigg \{ {{X + Y + Z = 21 (1) } \atop {X=2(Y + Z) (2)}} \text{; } \left \bigg \{ {{X + Y + Z = 21 (1)} \atop {X= Z + 10 (3)}$

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$X + 7 = 21 \Righarrow X = 14$

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3 years ago