Answer: Choice B) 
Work Shown:

Note: secant is positive in quadrant Q4, when theta is between 3pi/2 radians and 2pi radians (270 degrees and 360 degrees). So that's why we don't consider the minus form of the plus minus.
Answer: Answer is D, a 55° angle
Step-by-step explanation:
Answer:
860
Step-by-step explanation:
Eight hundred and sixty.
If I am understanding the question, and assuming the living room is a rectangle, then the border should be 80 ft
Answer:
104°
Step-by-step explanation:
If segments NO and NM are congruent, then angles NMO and NOM are congruent. So, their supplements, angles NML and NOP are congruent. That is ...
∠NML ≅ ∠NOP = 104°
∠NML = 104°