A=25
T=2π/ω=2π/30π=1/15c
ν=1/T=15 Гц
φ₀=π/4 рад
φ=30πt+π/4
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A=25
T=2π/ω=2π/30π=1/15c
ν=1/T=15 Гц
φ₀=π/4 рад
φ=30πt+π/4