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Engineering General Second-order Circuit

  • Thread starter paulmdrdo
  • Start date
57
2
Homework Statement
Find the expression for ##v(t)##
Homework Equations
SEE ATTACHED PHOTO
I was trying to follow the solution for this problem and got stuck in the last portion of the solution. I encircled the part that I did not understand. I can't figure out how the solver was able to come up with tangent terms. Please enlighten me. TIA
242126
242127
242128
 

NascentOxygen

Mentor
9,215
1,056
The author equated eqn (2) to 0
then extracted (and divided both sides by) the common factor 5(cos 21.749t)
 

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