Can the following 3 questions be answered correctly as example for me to use because I previously got it incorrect I will check it please double check and can it also be written neatly. Thank you!

GUI pt J 2 4 0 Details Use the sum or difference formula for tangent to determine the exact value of tan ( - 12 . Make sure to simplify your answer. Question Help: Video Calculator Submit Question . Question 9 Go/1 pt 2 2 4 0 Details Simplify csc - u ) to a single trig function using the sum or difference of angles identity Question Help: Video 1 Video 2 Calculator Submit Question . Question 10 C0/1 pt 02 24 0 Details Use an addition or subtraction formula to write the expression as a trigonometric function of one number: COS - cos + sin - - sin 21 = cos 21