Hello, I am stuck on these three questions. Please show work so that I may understand. Simplify answers where appropriate and Domains should be written in interval notation.

PLEASE WRITE NEATLY otherwise I won't be able to read it. Thank you! If it seems too much, you can skip question 6 I guess. If not, you can do it and I would greatly appreciate it

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Question 3 Prove the following identities: a) b) 1 + tan 0 sec O 2 tan x - = sin 2x 1 + cot 0 csc 0 1 + tan x Question 4 Convert the following to either rectangular or polar equations: a) r = -3sin 0 b) x - 4y =4 Question 6 Convert the following to polar coordinates using radians: a) b) (-3, 31/3) (-4, 4 ) Convert the following to rectangular coordinates: a) b) 3 7t 7 , 6 4