For this activity, you will be playing to be a detective. Your best friend has committed a math felony, he/she stole the following
list of possible trigonometric identities but the mathematics prosecutor (your professor) will dictate a sentence this week
unless you can help your friend verify any two of this list of identities to be true. You must act like a detective, which means, for
each step, you must provide a statement and a reason for each step until you achieve to the solution. Each mathematical step
counts! (For example, if you have an equation such as x+5=20, to solve for x you would subtract 5 from both sides, this will be
listed as your "statement" and the "reason" for this statement would be "using the Addition property of equality"). Research
names of any mathematical properties of equations you are using in your verification process as well as any trigonometric
procedures/identities used throughout the process.
"
HAVE FUN!!!
D Question 1
30 pts
To show that your friend is "not guilty", you must prove the following identity is true. Show all your work as
stated in the instructions with the two column format STATEMENTS and REASONS. Have FUN!
IDENTITY TO PROVE:
sin 20-cos 20 +1
1-cos² 6
+1=
2 csc +3 sec
sec