In the figure below ABC ~ DEF Which equation is correct
A. Sin a = DE/DF
B. Sin c = DE/ EF
C. Cos a= DE/ DF
D. Cos c = DE/EF

Use set buikder notation to represent the following set: {, -2, -1, 0}

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 (%)

Which will form a composite function?