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марьямка25
@марьямка25
June 2022
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Решите уравнение
sinx-cosx=1
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KuOV
Verified answer
Sinx - cosx = 1
делим на √2
1/√2sinx - 1/√2cosx = 1/√2
sinx·cos(π/4) - cosx·sin(π/4) = 1/√2
sin(x - π/4) = 1/√2
x - π/4 = π/4 + 2πn или x - π/4 = 3π/4 + 2πk
x = π/2 + 2πn x = π + 2πk
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Answers & Comments
Verified answer
Sinx - cosx = 1делим на √2
1/√2sinx - 1/√2cosx = 1/√2
sinx·cos(π/4) - cosx·sin(π/4) = 1/√2
sin(x - π/4) = 1/√2
x - π/4 = π/4 + 2πn или x - π/4 = 3π/4 + 2πk
x = π/2 + 2πn x = π + 2πk