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Homework Statement
Find the amplitude and phase of the sinusoid (4√3-3)cos(2t + 30°) + (3√3 – 4)cos(2t + 60°)
Homework Equations
Acos wt + Bsin wt
The Attempt at a Solution
Answer should be amplitude 5 and phase 36.9° but I get 4.11 and 5.7
Homework Statement
Find the amplitude and phase of the sinusoid (4√3-3)cos(2t + 30°) + (3√3 – 4)cos(2t + 60°)
Homework Equations
Acos wt + Bsin wt
The Attempt at a Solution
Answer should be amplitude 5 and phase 36.9° but I get 4.11 and 5.7
The square root of (4√3-3)^2 + (3√3 – 4)^ 2 = 4.11 and θ = tan^-1 (4√3-3)/(3√3 – 4) = 16.9 degrees