Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
b = 130, c = 460
A. A = 74.2°, B = 15.8°, a = 478
B. A = 15.8°, B = 74.2°, a = 441.2
C. A = 73.6°, B = 16.4°, a = 478
D. A = 73.6°, B = 16.4°, a = 441.2
Answer: D
Mathematics
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Use a product-to-sum identity to rewrite the expression.cos 15° sin 45°
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Write the system of linear equations that the augmented matrix represents.
A.
| 20x | + 19y | = 17 |
| 11x | + 19y | = 17 |
B.
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| 19x | + 11y | = 17 |
C.
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| 19x | + 11y | = 17 |
D.
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Mathematics