Can someone please help me figure this outSolution1 3secy co

Can someone please help me figure this out

Solution

1 3secy cosy =( 3/cosy )cosy =3

2 4cot³t/csct = (4 cott )cot²t/csct

= (4cott)(csc²t-1)/csct

= ( 4 cost/sint )*(csc²t-1)/(1/sint)

= (4cost)(csc²t-1)