Parallelogram 65954
In the parallelogram ABCD AB = 8, BC = 5, BD = 7. Calculate the magnitude of the angle α = ∠DAB (in degrees).
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- planimetrics
- triangle
- The Law of Cosines
- parallelogram
- numbers
- fractions
- goniometry and trigonometry
- cosine
Units of physical quantities:
Grade of the word problem:
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