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Enter the number that belongs in the green box

Enter the number that belongs in the green box
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1 vote
Enter the number that belongs in the green box

Enter the number that belongs in the green box-example-1
User Vadim Motorine
by
7.7k points

1 Answer

1 vote

Answer:

Set your calculator to Degree mode.

2² = 5² + 6² - 2(5)(6) cos A

4 = 61 - 60 cos A

57 = 60 cos A

cos A = 19/20

A = 18.19°

User Ruskin
by
9.0k points
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