Antiderivative of ((tanx)^2)((secx)^3)dx

[alingy1]

My teacher said to turn all tan and sec to cos and sin. I still do not understand how I can solve this. Can you give me a hint? I know what he means by turning to cos and sin, but what do I do next?

 

[Ray Vickson]

My teacher said to turn all tan and sec to cos and sin. I still do not understand how I can solve this. Can you give me a hint? I know what he means by turning to cos and sin, but what do I do next?

Show us what you get when you turn all tan and sec into sin and cos.