a. Show that the equation tan 2 x 2 tan x 6 = 0 can
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a. Show that the equation tan2 x − 2 tan x − 6 = 0 can be written as tan x = p + √q where p and q are numbers to be found.
b. Hence solve, for 0 ≤ x ≤ 3π, the equation tan2 x − 2 tan x − 6 = 0 giving your answers to 1 decimal place where appropriate.
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Related Book For
Pearson Edexcel A Level Mathematics Pure Mathematics Year 2
ISBN: 9781292183404
1st Edition
Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran
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