Question

4.) Simplify the expression.
tan ( u - π / 4 )
a.) cot u
b.) tan u -1 / tan u + 1
c.) ( tan u -1 ) × ( tan u + 1 )
d.) tan u
e.) sin u

Answer 1

Answer:

B

Step-by-step explanation:

$tan(u-\pi /4)=-tan(\pi /4-u)=-\frac{1-tan u}{1+tan u}=\frac{tan~u-1}{tan~u+1}$