A sinusoidal voltage is given by the expression

v$=80$cos$(240$t$+45)$Vv$=80$cos$(240$t$+45)$V$.$ Part A

Find ff in hertz. Part B

Find TT in milliseconds. Part C

Find VmVm$.$ Part D

Find v$(0)$v$(0).$ Part E

Find $$ in degrees. Part F

Find $$ in radians. Part G

Find the smallest positive value of tt at which v$=0$v$=0.$ Part H

Find the smallest positive value of tt at which dv$/$dt$=0$dv$/$dt$=0.$