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14-05-2020
Mathematics

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Laws of Sines: Find each measurement indicated. Round your answer to the nearest tenth.

Laws of Sines Find each measurement indicated Round your answer to the nearest tenth class=

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amna04352 amna04352

14-05-2020

Answer:

2. 137°

3. 24.7°

Step-by-step explanation:

Using cosine law:

2. 28² = 12² + 18² - 2(12)(18)cosA

cosA = -79/108

A = 137.0107361°

3. 15² = 19² + 30² - 2(19)(30)cosC

cosC =259/285

C = 24.66381079°

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