Trigonometry ~ Help me out?

Leki

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I'm in 12th grade, and I need a good GPA... problem is I really suck at math. Like, failing suck. The only way to get the help I need is to stay after school, then find a ride, and I can't do that as many times as I need too. If anyone could help explain how to do these problems, it'd be wonderful.

Note 1 - Theta (the circular symbol with a horizontal line through the middle) is used. But since I don't have that symbol, I'll use a * instead.

Note 2 - We're working with sin, cos, tan and their reciprocals.

Example Problem:
Verify: cos*csc*tan*=1

I know the answer to the problem is 1=1, but I'm not sure how to get there.
 
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