just few questions..im just checking my work if i arrived with the right answer.

1.equivalent expression to (1 + tan x)/sec x?

2. the exact value of csc (4pie/3)?

3. the phase shift of the function defined by the expression y= 4 sin(2Ө-6)?

4. the amplitude of the function defined by the expression y= 4 sin [2pie/5(t-9)]?

thank you so much...i was just having problem solving this question...i appreciate all your help.....