A shed with a pent roof needs to have some new roof beams fitted. The width of the shed is
5m and the height of the pent roof is 1.3m.
What is the length of the roof beam?

Can someone me with this problem i don't understand i need

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

Solve for x where 0 equation: cot^2x+2cotx+1=0