Answer:
1. 2
2. -3/5
3. Undefined
Step-by-step explanation:
Using the rise over run method you get 4/2, -3/5, and then for the straight vertical line, its undefined.
The result is -6
Hope this helps.
Answer:
c
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
Using the identity
tan x = 
Consider the left side

=
( multiply numerator and denominator by cos²x to clear fractions
=
← ( cos²x + sin²x = 1 ]
= cos²x - sin²x
= right side , thus proven