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An expression is given.(first image)
Which are equivalent to the given expression? Select each correct answer. And Explain? (second image)
An expression is given.(first image)
Which are equivalent to the given expression? Select each correct answer. And Explain? (second image)
1 answer:
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Answer:
53°
Step-by-step explanation:
17² = 18² + 20² - 2(18)(20) cos Q
289 = 324 + 400 - 720 cos Q
289 = 724 - 720 cos Q
-435 = -720 cos Q
0.6042 = cos Q
Q = 52.83