examday

Community mocks

StepMaths Mock Paper 1 · Q13

Paper 1TrigonometryFunctions & graphsAlgebra

How many roots does the equation 3cos⁡4(x)+2cos⁡3(x)−7cos⁡(x)+1=03\cos^4(x)+2\cos^3(x)-7\cos(x)+1=0 have in the range 0<x<2π0<x<2\pi?

A00
B11
C22
D44
E88

Read the questions freely. Sign in to check your answer, see the worked solution and save your progress.

Sign in to check your answerPractise the whole paper →