Find the slope between points (1,3) and (4,6)

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

If the value of cos330°is√3/2 then find cos 165°.