Question 1
Simplify the trigonometric expression cos(

- t) - cos(t - π) + sin(t - π).
◦ cos(t)
◦ 2cos(t) - sin(t)
◦ cos(t) + 2sin(t)
◦ 2sin(t) - cos(t)
◦ 2cos(t) + sin(t)
Question 2
Simplify the expression csc
x -

.
◦ tan x
◦ cot x
◦ cos x
◦ 1
◦ sin x