rozwiąż a) cos5x=√3/2
b) ctg(x-π/5)=0
a)
cos5x=√3/2
cos5x = cos60* lub cos5x = cos(180* - 60*)
5x = 60* + 2kπ lub 5x = 120* + 2kπ
x = 12* + 2kπ/5 lub x = 24* + 2kπ/5
b)
ctg(x-π/5)=0
ctg(x-π/5) = ctg π/2
x - π/5 = π/2 + kπ
x = π/2 + π/5 + kπ
x = 7π/10 + kπ
cos5x = cos60*
5x = 60* + 2kπ
x = 12* + 2kπ/5
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a)
cos5x=√3/2
cos5x = cos60* lub cos5x = cos(180* - 60*)
5x = 60* + 2kπ lub 5x = 120* + 2kπ
x = 12* + 2kπ/5 lub x = 24* + 2kπ/5
b)
ctg(x-π/5)=0
ctg(x-π/5) = ctg π/2
x - π/5 = π/2 + kπ
x = π/2 + π/5 + kπ
x = 7π/10 + kπ
a)
cos5x=√3/2
cos5x = cos60*
5x = 60* + 2kπ
x = 12* + 2kπ/5
b)
ctg(x-π/5)=0
ctg(x-π/5) = ctg π/2
x - π/5 = π/2 + kπ
x = π/2 + π/5 + kπ
x = 7π/10 + kπ