Help me I need help please help I am stalling the 20 words or more help help help please please

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g