Show that, for small values of xxx, the graph of y=7+9sinx3+10tanx5y = 7 + 9\sin \frac{x}{3} + 10\tan \frac{x}{5}y=7+9sin3x+10tan5x can be approximated by a straight line.
Practise Edexcel A Level Maths Radians with exam-style questions for A Level Maths. 52 questions covering 5.1 Radian Measure, 5.2 Arc Length, 5.3 Areas of Sectors and Segments, 5.4 Solving Trigonometric Equations, and 5.5 Small Angle Approximations, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.