kellerpaula kellerpaula

29-03-2020
Mathematics

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Please help. Trig: Laws of Cosines
If a rhombus whose side measures 10 and the smaller angle is 72*, find the length of the larger diagonal, to the nearest tenth.

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amna04352 amna04352

30-03-2020

Answer:

16.2

Step-by-step explanation:

Greater angle: 180 - 72 = 108

Diagonal² = 10² + 10² - 2(10)(10)cos(108)

Diagonal² = 261.8033989

Diagonal = 16.18033989

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