The anwser is c your welcome
Step-by-step explanation:
tanB + cotB = (sinB)/(cosB) + (cosB)/(sinB)
= (sin2B + cos2B)/[(cosB)(sinB)]
= 1/[(cosB)(sinB)]
= (1/cosB)(1/sinB)
= (secB)(cscB)
Length of floor = length of room = 7.5 units
Width of floor =
* Width of Room =
* 
⇒ Width of floor = 1.067 units