Solutions of Question 7 & 8 of Exercise 9.1 of Unit 09: Trigonometric Functions. This is unit of Model Textbook of Mathematics for Class XI published by National Book Foundation (NBF) as Federal Textbook Board, Islamabad, Pakistan.
Draw the graphs of $y=\operatorname{Sin} x$ and $y=\operatorname{Sin} 2 x$ in $[0,2 \pi]$ on the same scale.
Solution.
Draw the graphs of $y=\operatorname{Cos} x$ and $y=\operatorname{Cos} 2 x$ in $[0,2 \pi]$ on the same scale.
Solution.