A-Level
CAIE
Mathematics
May 2023
QP-202305-Mathematics-P13 · Question 4
Question (excerpt):
4 (a) Show that the equation 3 tan2x −3 sin2x −4 = 0 may be expressed in the form a cos4x + b cos2x + c = 0, where a, b and c are constants to be found. [3] ...........................................…
4 (a) Show that the equation 3 tan2x −3 sin2x −4 = 0 may be expressed in the form a cos4x + b cos2x + c = 0, where a, b and c are constants to be found. [3] ...........................................…
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