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3 years ago

Mhanifa please help! Solve for the unknown in each triangle. Round to the nearest tenth.

Mathematics

1 answer:

Scilla [17]3 years ago

8 0

Answer:

(D)

Use the law of sines:

13 / sin x = 12 / sin 67°
sin x = 13 sin 67° / 12
sin x = 0.997
x = arcsin (0.997)
x = 85.6°

(E)

Find the third angle:

180° - (48° + 61°) = 71°

Use the las of sines:

x / sin 61° = 21 / sin 71°
x = 21 sin 61° / sin 71°
x = 19.4 cm

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