Thread: Couple problems.

Hi. I'm new here and I'm pretty bad at trig. I hope someone can help me solve these problems.

Show that the following identity is true:

tan(x)/1-cos(x) = csc(x)(1+sec(x))

and

Find the exact value of the following: csc (9pi/4) and tan(23pi/4)

I'll be very grateful for any help. Thanks!

Originally Posted by ChargersFan84

Hi. I'm new here and I'm pretty bad at trig. I hope someone can help me solve these problems.

Show that the following identity is true:

tan(x)/1-cos(x) = csc(x)(1+sec(x))

Hint: Multiply the LHS by and simplify...

and

Find the exact value of the following: csc (9pi/4) and tan(23pi/4)

I'll be very grateful for any help. Thanks!

Note that and

I gave enough hints so you can attempt the problems. If you get stuck, let us know.

--Chris