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drek231 [11]
3 years ago
8

Giải phương trình sau: cot^2x - 3=0

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0

Answer:

+ 30 and - 30

Step-by-step explanation:

cot²x - 3 = 0

cot² x = 3

cot x = + √3, - √3

cot 30 = + √3, - √3

x = + 30 and - 30

30 = π/6

- 30 = - π/6

30 = 2nπ + π/6, n ∈ integers

- 30 = 2nπ - π/6, n ∈ integers

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