Expression 4: left parenthesis, StartFraction, cos left parenthesis, "a" "t" , right parenthesis Over "b" , EndFraction plus StartFraction, cos left parenthesis, "c" "t" , right parenthesis Over "d" , EndFraction plus StartFraction, sin left parenthesis, "f" "t" , right parenthesis Over "g" , EndFraction , StartFraction, sin left parenthesis, "a" "t" , right parenthesis Over "b" , EndFraction plus StartFraction, sin left parenthesis, "c" "t" , right parenthesis Over "d" , EndFraction plus StartFraction, cos left parenthesis, "f" "t" , right parenthesis Over "g" , EndFraction , right parenthesiscosatb+cosctd+sinftg,sinatb+sinctd+cosftg
domain t Minimum: 00
less than or equal to "t" less than or equal to≤t≤