Question

2 tan²A tan²B tan²C + tan²A tan²B + tan²B tan²C + tan²A tan²C = 1

PT: sin²A + sin²B + sin2C = 1

Answer 1

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Answer 2

Step-by-step explanation:

The three most common methods are basin irrigation, border irrigation and furrow irrigation. Water is typically introduced at the highest point or along the edge of a field, which allows covering the field by overland flow.