Here is a sketch of the curve y=cosx∘y = \cos x^\circy=cosx∘ for 0≤x≤3600 \leq x \leq 3600≤x≤360
Use the graph to find estimates of the solutions, in the interval 0≤x≤3600 \leq x \leq 3600≤x≤360, of the equation:
i.[2]
cos(x)=−0.85\cos(x) = -0.85cos(x)=−0.85
ii.[2]
4cos(x)=14 \cos(x) = 14cos(x)=1
Trigonometric and Exponential Graphs Questions
Practise Edexcel GCSE Maths Trigonometric and Exponential Graphs with exam-style questions for Foundation and Higher tier. 33 questions, matched to the Edexcel GCSE Maths (1MA1) 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.